The Dun & Bradstreet Corporation Underwriting Agreement

Exhibit 1.1

Execution Version

The Dun & Bradstreet Corporation

3.250% Senior Notes Due 2017

4.375% Senior Notes Due 2022

Underwriting Agreement

New York, New York

November 28, 2012

To the Representatives named in

Schedule I hereto of the

Underwriters named in

Schedule II hereto

Ladies and Gentlemen:

The Dun & Bradstreet Corporation, a corporation organized under the laws of Delaware (the “Company”), proposes to sell to the several underwriters named in Schedule II hereto (the “Underwriters”), for whom you (the “Representatives”) are acting as representatives, the principal amount of its securities identified in Schedule I hereto (the “Securities”), to be issued under an indenture dated as of March 14, 2006, between the Company and The Bank of New York Mellon, as trustee (the “Trustee”), as supplemented and amended by a first supplemental indenture thereto, to be dated as of the Closing Date (as defined below) (as so supplemented and amended, the “Indenture”). To the extent there are no additional Underwriters listed on Schedule II other than you, the term Representatives as used herein shall mean you, as Underwriters, and the terms Representatives and Underwriters shall mean either the singular or plural as the context requires. Any reference herein to the Registration Statement, the Basic Prospectus, any Preliminary Prospectus or the Final Prospectus shall be deemed to refer to and include the documents incorporated by reference therein pursuant to Item 12 of Form S-3 which were filed under the Exchange Act on or before the Effective Date of the Registration Statement or the issue date of the Basic Prospectus, any Preliminary Prospectus or the Final Prospectus, as the case may be, and any reference herein to the terms “amend,” “amendment” or “supplement” with respect to the Registration Statement, the Basic Prospectus, any Preliminary Prospectus or the Final Prospectus shall be deemed to refer to and include the filing of any document under the Exchange Act after the Effective Date of the Registration Statement or the issue date of the Basic Prospectus, any Preliminary Prospectus or the Final Prospectus, as the case may be, deemed to be incorporated therein by reference. Certain terms used herein are defined in Section 19 hereof.

1. Representations and Warranties. The Company represents and warrants to, and agrees with, each Underwriter as set forth below in this Section 1.

(a) The Company meets the requirements for use of Form S-3 under the Act and has prepared and filed with the Commission an automatic shelf registration statement, as defined in Rule 405 (the file number of which is set forth in Schedule I hereto) on Form S-3, including a related basic prospectus, for registration under the Act

of the offering and sale of the Securities. Such Registration Statement, including any amendments thereto filed prior to the Execution Time, became effective upon filing. The Company may have filed with the Commission, as part of an amendment to the Registration Statement or pursuant to Rule 424(b), one or more Preliminary Prospectuses, each of which has previously been furnished to you. The Company will file with the Commission a final prospectus supplement relating to the Securities in accordance with Rule 424(b). As filed, such final prospectus supplement shall contain all information required by the Act and the rules thereunder, and, except to the extent the Representatives shall agree in writing to a modification, shall be in all substantive respects in the form furnished to you prior to the Execution Time or, to the extent not completed at the Execution Time, shall contain only such specific additional information and other changes (beyond that contained in the Basic Prospectus and any Preliminary Prospectus) as the Company has advised you, prior to the Execution Time, will be included or made therein. The Registration Statement, at the Execution Time, meets the requirements set forth in Rule 415(a)(1)(x).

(b) On the Effective Date, the Registration Statement did, and when the Final Prospectus is first filed (if required) in accordance with Rule 424(b) and on the Closing Date (as defined herein), the Final Prospectus (and any supplement thereto) will, comply in all material respects with the applicable requirements of the Act, the Exchange Act and the Trust Indenture Act and the respective rules thereunder; on the Effective Date and at the Execution Time, the Registration Statement did not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein not misleading; on the Effective Date and on the Closing Date the Indenture did or will comply in all material respects with the applicable requirements of the Trust Indenture Act and the rules thereunder; and on the date of any filing pursuant to Rule 424(b) and on the Closing Date, the Final Prospectus (together with any supplement thereto) will not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that the Company makes no representations or warranties as to (i) that part of the Registration Statement which shall constitute the Statement of Eligibility (Form T-1) under the Trust Indenture Act of the Trustee or (ii) the information contained in or omitted from the Registration Statement or the Final Prospectus (or any supplement thereto) in reliance upon and in conformity with information furnished in writing to the Company by or on behalf of any Underwriter through the Representatives specifically for inclusion in the Registration Statement or the Final Prospectus (or any supplement thereto), it being understood and agreed that the only such information furnished by or on behalf of any Underwriters consists of the information described as such in Section 8 hereof.

(c) As of the Execution Time and the Closing Date, the Disclosure Package, when taken together as a whole, does not contain any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The preceding sentence does not apply to statements in or omissions from the Disclosure Package based upon and in conformity with written information furnished to the Company by any

Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by or on behalf of any Underwriter consists of the information described as such in Section 8 hereof.

(d) (i) At the time of filing the Registration Statement, (ii) at the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Sections 13 or 15(d) of the Exchange Act or form of prospectus), (iii) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c)) made any offer relating to the Securities in reliance on the exemption in Rule 163, and (iv) at the Execution Time (with such date being used as the determination date for purposes of this clause (iv)), the Company was or is (as the case may be) a “well-known seasoned issuer” as defined in Rule 405. The Company agrees to pay the fees required by the Commission relating to the Securities within the time required by Rule 456(b)(1) without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r).

(e) (i) At the earliest time after the filing of the Registration Statement that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2)) of the Securities and (ii) as of the Execution Time (with such date being used as the determination date for purposes of this clause (ii)), the Company was not and is not an Ineligible Issuer (as defined in Rule 405), without taking account of any determination by the Commission pursuant to Rule 405 that it is not necessary that the Company be considered an Ineligible Issuer.

(f) Each Issuer Free Writing Prospectus does not include any information that conflicts with the information contained in the Registration Statement, including any document incorporated by reference therein and any prospectus supplement deemed to be a part thereof that has not been superseded or modified. The foregoing sentence does not apply to statements in or omissions from the Disclosure Package based upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by or on behalf of any Underwriter consists of the information described as such in Section 8 hereof.

(g) Each of the Company and its subsidiaries has been duly organized and is validly existing as an organization in good standing under the laws of the jurisdiction in which it is chartered or organized with full power and authority to own or lease, as the case may be, and to operate its properties and conduct its business as described in the Disclosure Package and the Final Prospectus, and is duly qualified to do business as a foreign corporation and is in good standing under the laws of each jurisdiction that requires such qualification, except where the failure to be so qualified or in good standing could not be reasonably expected to have a material adverse effect on the performance of this Agreement or the consummation of any of the transactions contemplated hereby or the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business (a “Material Adverse Effect”).

(h) Except as otherwise would not have a Material Adverse Effect, all the outstanding ownership interests of each subsidiary of the Company have been duly and validly authorized and issued and, in the case of corporations, are fully paid and nonassessable, and, except as otherwise set forth in the Disclosure Package and the Final Prospectus, all outstanding ownership interests of such subsidiaries are owned by the Company either directly or through wholly owned subsidiaries free and clear of any perfected security interest or any other security interests, claims, liens or encumbrances.

(i) There is no franchise, contract or other document of a character required to be described in the Registration Statement or Prospectus, or to be filed as an exhibit thereto, which is not described or filed as required; and the statements in the Preliminary Prospectus and the Final Prospectus under the heading “Description of senior notes” insofar as such statements summarize legal matters, agreements, documents or proceedings discussed therein, are accurate and fair summaries of such legal matters, agreements, documents or proceedings.

(j) This Agreement has been duly authorized, executed and delivered by the Company.

(k) The Indenture has been duly authorized by the Company and, when duly executed and delivered by the Company, will constitute a legal, valid and binding instrument of the Company enforceable in accordance with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors’ rights and to general equity principles.

(l) The Securities have been duly authorized by the Company, and, when the Securities are duly authenticated by the Trustee and executed and delivered in accordance with the Indenture and paid for by the Underwriters in accordance with this Agreement, such Securities will be duly and validly issued and will constitute valid and biding obligations of the Company enforceable against the Company in accordance with their terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors’ rights and to general equity principles. The Securities will be entitled to the benefit of the Indenture and will conform, in all material respect, to the description thereof contained in the Disclosure Package and Final Prospectus.

(m) No consent, approval, authorization, filing with or order of any court or governmental agency or body is required in connection with the transactions contemplated herein, except such as have been obtained under the Act and the Trust Indenture Act and such as may be required under the blue sky laws of any jurisdiction in connection with the purchase and distribution of the Securities by the Underwriters in the manner contemplated herein and in the Final Prospectus, and except where the lack thereof would not, individually or in the aggregate, have a Material Adverse Effect.

(n) Neither the issue and sale of the Securities nor the consummation of any other of the transactions herein contemplated nor the fulfillment of the terms hereof will

conflict with, result in a breach or violation of, or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any of its subsidiaries pursuant to, (i) the charter or by-laws of the Company or any of its subsidiaries, (ii) the terms of any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument to which the Company or any of its subsidiaries is a party or bound or to which its or their property is subject, or (iii) any statute, law, rule, regulation, judgment, order or decree applicable to the Company or any of its subsidiaries of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or any of its subsidiaries or any of its or their properties, except, with respect to clauses (ii) or (iii) above, for such conflicts, breaches, liens, charges, encumbrances or violations that could not reasonably be expected to result in a Material Adverse Effect.

(o) No holders of securities of the Company have rights to the registration of such securities under the Registration Statement.

(p) The consolidated historical financial statements and schedules of the Company and its consolidated subsidiaries included or incorporated by reference in the Preliminary Prospectus, the Final Prospectus and the Registration Statement present fairly in all material respects the financial condition, results of operations and cash flows of the Company as of the dates and for the periods indicated, comply as to form with the applicable accounting requirements of the Act and the Exchange Act and have been prepared in conformity with generally accepted accounting principles applied on a consistent basis throughout the periods involved (except as otherwise noted therein). The selected financial data set forth under the caption “Selected Financial Data” in the Preliminary Prospectus, the Final Prospectus and Registration Statement fairly present, on the basis stated in the Preliminary Prospectus, the Final Prospectus and the Registration Statement, the information included therein. The interactive data in eXtensbile Business Reporting Language included or incorporated by reference in the Registration Statement, the Prospectus and the Disclosure Package fairly presents the information called for in all material respects and have been prepared in accordance with the Commission’s rules and guidelines applicable thereto.

(q) No action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries or its or their property is pending or, to the best knowledge of the Company, threatened that could reasonably be expected to have a Material Adverse Effect, except as set forth in or contemplated in the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(r) Each of the Company and each of its subsidiaries owns or leases all such properties as are necessary to the conduct of its operations as presently conducted, except where such failure to own or lease such properties would not have a Material Adverse Effect.

(s) Neither the Company nor any subsidiary is in violation or default of (i) any provision of its charter, bylaws or other organizational documents, (ii) the terms of

any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument to which it is a party or bound or to which its property is subject, or (iii) any statute, law, rule, regulation, judgment, order or decree of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or such subsidiary or any of its properties, as applicable, except, with respect to clauses (ii) and (iii) above, for such violations or defaults that could not reasonably be expected to have a Material Adverse Effect.

(t) To the best of the Company’s knowledge, PricewaterhouseCoopers LLP, who have certified certain financial statements of the Company and its consolidated subsidiaries and delivered their report with respect to the audited consolidated financial statements and schedules included in the Prospectus, are an independent registered public accounting firm with respect to the Company within the meaning of the Act and the applicable published rules and regulations thereunder.

(u) The Company has filed all foreign, federal, state and local income tax returns that are required to be filed or has requested extensions thereof (except in any case in which the failure so to file would not have a material adverse effect on the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Disclosure Package and the Prospectus (exclusive of any supplement thereto) and has paid all taxes required to be paid by it and any other assessment, fine or penalty levied against it, to the extent that any of the foregoing is due and payable, except for any such assessment, fine or penalty that is currently being contested in good faith or as would not have a material adverse effect on the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(v) No labor problem or dispute with the employees of the Company or any of its subsidiaries exists or, to the knowledge of the Company, is threatened or imminent, except for such problems or disputes that could not reasonably be expected to result in a Material Adverse Effect.

(w) The Company and each of its subsidiaries are insured by insurers of recognized financial responsibility against such losses and risks and in such amounts as are prudent and customary in the businesses in which they are engaged; all policies of insurance and fidelity or surety bonds insuring the Company or any of its subsidiaries or their respective businesses, assets, employees, officers and directors are in full force and effect; the Company and its subsidiaries are in compliance with the terms of such policies and instruments in all material respects; and there are no claims by the Company or any of its subsidiaries under any such policy or instrument as to which any insurance company is denying liability or defending under a reservation of rights clause, except as would not have, individually or in the aggregate, a Material Adverse Effect; neither the Company nor any such subsidiary has been refused within the past five years any

insurance coverage sought or applied for; and neither the Company nor any such subsidiary has any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a material adverse effect on the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(x) No significant subsidiary of the Company is currently prohibited, directly or indirectly, from paying any dividends to the Company, from making any other distribution on such subsidiary’s capital stock or other ownership interests, from repaying to the Company any loans or advances to such subsidiary from the Company or from transferring any of such subsidiary’s property or assets to the Company or any other subsidiary of the Company, except as described in or contemplated by the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(y) The Company and its subsidiaries possess all licenses, certificates, permits and other authorizations issued by the appropriate federal, state or foreign regulatory authorities necessary to conduct their respective businesses except for such licenses, certificates, permits and other authorizations that if not possessed would not, individually or in the aggregate, have a Material Adverse Effect, and neither the Company nor any such subsidiary has received any notice of proceedings relating to the revocation or modification of any such certificate, authorization or permit which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would have a material adverse effect on the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(z) The Company and each of its subsidiaries maintain a system of internal accounting controls sufficient to provide reasonable assurance regarding the reliability of financial reporting and preparation of financial statements in accordance with generally accepted accounting principles, except as otherwise would not have a Material Adverse Effect.

(aa) The Company has not taken, directly or indirectly, any action designed to or that would constitute or that might reasonably be expected to cause or result in, under the Exchange Act or otherwise, stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities.

(bb) The Company and its subsidiaries are (i) in compliance with any and all applicable foreign, federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants (“Environmental Laws”), (ii) have received and are in

compliance with all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses, and (iii) have not received notice of any actual or potential liability under any environmental law, except, in each case, where such non-compliance with Environmental Laws, failure to receive required permits, licenses or other approvals, or liability would not, individually or in the aggregate, have a Material Adverse Effect, except as set forth in or contemplated in the Disclosure Package and the Prospectus (exclusive of any supplement thereto).

(cc) Except as otherwise disclosed in the Disclosure Package or as would not have a Material Adverse Effect, the minimum funding standard under Section 302 of the Employee Retirement Income Security Act of 1974, as amended, and the regulations and published interpretations thereunder (“ERISA”), has been satisfied by each “pension plan” (as defined in Section 3(2) of ERISA) which has been established or maintained by the Company and/or one or more of its subsidiaries which is a member of the Company’s controlled group within the meaning of ERISA or Section 414 of the Code (“Controlled Subsidiary”) to the extent that such standards are applicable to such plan, and the trust forming part of each such plan which is intended to be qualified under Section 401(a) of the Code is exempt from tax under Section 501(a) of the Code to the best of the Company’s knowledge; each of the Company and its subsidiaries has fulfilled its obligations, if any, under Section 515 of ERISA; each pension plan and welfare plan established or maintained by the Company and/or one or more of its Controlled Subsidiaries is in compliance in all material respects with the currently applicable provisions of ERISA; and neither the Company nor any of its Controlled Subsidiaries has incurred or could reasonably be likely to incur any withdrawal liability under Section 4201 of ERISA, any liability under Section 4062, 4063, or 4064 of ERISA, or any other liability under Title IV of ERISA.

(dd) There is and has been no material failure on the part of the Company and any of the Company’s directors or officers, in their capacities as such, to comply with any provision of the Sarbanes Oxley Act of 2002 and the rules and regulations promulgated in connection therewith (the “Sarbanes Oxley Act”), including Section 402 thereof related to loans and Sections 302 and 906 thereof related to certifications.

(ee) Except as otherwise disclosed in the Disclosure Package or for such actions that would not have a Material Adverse Effect, neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of its subsidiaries is aware of or has taken any action, directly or indirectly, that would result in a violation by such Persons of the Foreign Corrupt Practices Act of 1977, as amended, (the “FCPA”) and the rules and regulations thereunder including, without limitation, making use of the mails or any means or instrumentality of interstate commerce corruptly in furtherance of any offer, payment, promise to pay or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of value to any “foreign official” (as such term is defined in the FCPA) or any foreign political party or official thereof or any candidate for foreign political office, in contravention of the FCPA and the Company, its subsidiaries and, to the knowledge of the Company, its affiliates have conducted their businesses in compliance with the FCPA and have instituted and maintain policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith.

(ff) Except as otherwise would not have a Material Adverse Effect, the operations of the Company and its subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all jurisdictions, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the best knowledge of the Company, threatened.

(gg) Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of its subsidiaries is currently subject to any U.S. sanctions administered by the Office of Foreign Assets Control of the U.S. Treasury Department (“OFAC”); and the Company will not directly or indirectly use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any U.S. sanctions administered by OFAC.

(hh) The subsidiaries listed on Annex A attached hereto are the only significant subsidiaries of the Company as defined by Rule 1-02 of Regulation S-X as promulgated by the Commission.

(ii) The Company and its subsidiaries own, possess, license or have other rights to use, on reasonable terms, all patents, patent applications, trade and service marks, trade and service xxxx registrations, trade names, copyrights, licenses, inventions, trade secrets, technology, know-how and other intellectual property (collectively, the “Intellectual Property”) necessary for the conduct of the Company’s business as now conducted or as proposed in the Disclosure Package and the Final Prospectus to be conducted. (i) To the Company’s knowledge, there are no rights of third parties to any such Intellectual Property other than licensed rights, except that Standard & Poor’s Financial Services LLC and Telkurs (USA), Inc. have equity ownership shares along with the Company in the invention entitled “Security-to-Entity Crosswalk” and the corresponding U.S. and foreign patent applications; (ii) to the Company’s knowledge, there is no material infringement by third parties of any such Intellectual Property; (iii) there is no material pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging the Company’s rights in or to any such Intellectual Property, and the Company is unaware of any facts which would form a reasonable basis for any such claim; (iv) to the Company’s best knowledge, there is no material pending or threatened action, suit, proceeding or claim by others challenging the validity or scope of any such Intellectual Property, and the Company is unaware of any facts which would form a reasonable basis for any such claim; (v) there is no material pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by

others that the Company infringes or otherwise violates any patent, trademark, copyright, trade secret or other proprietary rights of others, and the Company is unaware of any other fact which would form a reasonable basis for any such claim; (vi) to the Company’s knowledge, there is no material U.S. patent or published U.S. patent application which contains a valid and enforceable claim that is infringed by the Company; and (vii) there is no material prior art of which the Company is aware that may render any U.S. patent held by the Company invalid or any U.S. patent application held by the Company unpatentable which has not been disclosed to the U.S. Patent and Trademark Office.

(jj) Neither the Company nor any of its subsidiaries nor any of its or their properties or assets has any immunity from the jurisdiction of any court or from any legal process (whether through service or notice, attachment prior to judgment, attachment in aid of execution or otherwise) under the laws of New York.

Any certificate signed by any officer of the Company and delivered to the Representatives or counsel for the Underwriters in connection with the offering of the Securities shall be deemed a representation and warranty by the Company, as to matters covered thereby, to each Underwriter.

2. Purchase and Sale. Subject to the terms and conditions and in reliance upon the representations and warranties herein set forth, the Company agrees to sell to each Underwriter, and each Underwriter agrees, severally and not jointly, to purchase from the Company, at the purchase price set forth in Schedule I hereto the principal amount of the Securities set forth opposite such Underwriter’s name in Schedule II hereto.

3. Delivery and Payment. Delivery of and payment for the Securities shall be made on the date and at the time specified in Schedule I hereto or at such time on such later date not more than three Business Days after the foregoing date as the Representatives shall designate, which date and time may be postponed by agreement between the Representatives and the Company or as provided in Section 9 hereof (such date and time of delivery and payment for the Securities being herein called the “Closing Date”). Delivery of the Securities shall be made to the Representatives for the respective accounts of the several Underwriters against payment by the several Underwriters through the Representatives of the purchase price thereof to or upon the order of the Company by wire transfer payable in same-day funds to an account specified by the Company. Delivery of the Securities shall be made through the facilities of The Depository Trust Company unless the Representatives shall otherwise instruct.

4. Offering by Underwriters. It is understood that the several Underwriters propose to offer the Securities for sale to the public as set forth in the Final Prospectus.

5. Agreements. The Company agrees with the several Underwriters that:

(a) Prior to the termination of the offering of the Securities, the Company will not file any amendment to the Registration Statement or supplement (including the Final Prospectus or any Preliminary Prospectus) to the Basic Prospectus unless the Company has furnished you a copy for your review prior to filing and will not file any such proposed amendment or supplement to which you reasonably object. The Company will

cause the Final Prospectus, properly completed, and any supplement thereto to be filed in a form approved by the Representatives with the Commission pursuant to the applicable paragraph of Rule 424(b) within the time period prescribed and will provide evidence satisfactory to the Representatives of such timely filing. The Company will promptly advise the Representatives when the Final Prospectus, and any supplement thereto, shall have been filed (if required) with the Commission pursuant to Rule 424(b), (1) when, prior to termination of the offering of the Securities, any amendment to the Registration Statement shall have been filed or become effective, (2) of any request by the Commission or its staff for any amendment to the Registration Statement, or any registration statement filed pursuant to Rule 462(b), or for any supplement to the Final Prospectus or for any additional information, (3) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or of any notice that would prevent its use or the use of the Preliminary Prospectus or Final Prospectus or the institution or threatening of any proceeding for that purpose, and (4) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Securities for sale in any jurisdiction or the institution or threatening of any proceeding for such purpose. The Company will use its commercially reasonable best efforts to prevent the issuance of any such stop order or the occurrence of any such suspension or prevention and, upon such issuance, occurrence or prevention, to obtain as soon as possible the withdrawal of such stop order or relief from such occurrence or prevention, including, if necessary, by filing an amendment to the Registration Statement or a new registration statement and using its commercially reasonable best efforts to have such amendment or new registration statement declared effective as soon as practicable.

(b) The Company will prepare a final term sheet, containing solely a description of the Securities, substantially in the form attached as Schedule IV hereto and file such term sheet pursuant to Rule 433(d) within the time required by such Rule.

(c) If there occurs an event or development as a result of which the Disclosure Package would include an untrue statement of a material fact or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances then prevailing, not misleading, the Company will notify promptly the Representatives so that any use of the Disclosure Package may cease until it is amended or supplemented.

(d) If, at any time when a prospectus relating to the Securities is required to be delivered under the Act (including in circumstances where such requirement may be satisfied pursuant to Rule 172), any event occurs as a result of which the Final Prospectus as then supplemented would include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it shall be necessary to amend the Registration Statement, file a new registration statement or supplement the Final Prospectus to comply with the Act or the Exchange Act or the respective rules thereunder, including in connection with use or delivery of the Final Prospectus, the Company promptly will (1) notify the Representatives of such event, (2) prepare and file with the Commission, subject to the second sentence of paragraph (a) of this Section 5, an amendment or supplement or new registration statement which will correct such statement or omission or effect such compliance, and (3) supply any supplemented Final Prospectus to you in such quantities as you may reasonably request.

(e) As soon as practicable, the Company will make generally available to its security holders and to the Representatives an earnings statement or statements of the Company and its subsidiaries which will satisfy the provisions of Section 11(a) of the Act and Rule 158.

(f) The Company will furnish to the Representatives and counsel for the Underwriters, without charge, signed copies of the Registration Statement (including exhibits thereto) and to each other Underwriter a copy of the Registration Statement (without exhibits thereto) and, so long as delivery of a prospectus by an Underwriter or dealer may be required by the Act (including in circumstances where such requirement may be satisfied pursuant to Rule 172), as many copies of each Preliminary Prospectus, the Final Prospectus and each Issuer Free Writing Prospectus and any supplement thereto as the Representatives may reasonably request. The Company will pay the expenses of printing or other production of all documents relating to the offering.

(g) The Company will arrange, if necessary, for the qualification of the Securities for sale under the laws of such jurisdictions as the Representatives may designate, will maintain such qualifications in effect so long as required for the distribution of the Securities and will pay any fee of the Financial Industry Regulatory Authority, in connection with its review of the offering; provided that in no event shall the Company be obligated to qualify to do business in any jurisdiction where it is not now so qualified or to take any action that would subject it to service of process in suits, other than those arising out of the offering or sale of the Securities, in any jurisdiction where it is not now so subject.

(h) The Company agrees that, unless it obtains the prior written consent of the Representatives, and each Underwriter, severally and not jointly, agrees with the Company that, unless it has obtained or will obtain, as the case may be, the prior written consent of the Company, it has not made and will not make any offer relating to the Securities that would constitute an Issuer Free Writing Prospectus or that would otherwise constitute a “free writing prospectus” (as defined in Rule 405) required to be filed by the Company with the Commission or retained by the Company under Rule 433, other than the final term sheet prepared and filed pursuant to Section 5(b) hereto; provided that the prior written consent of the parties hereto shall be deemed to have been given in respect of the Free Writing Prospectuses included in Schedule III hereto. Any such free writing prospectus consented to by the Representatives or the Company is hereinafter referred to as a “Permitted Free Writing Prospectus.” The Company agrees that (x) it has treated and will treat, as the case may be, each Permitted Free Writing Prospectus as an Issuer Free Writing Prospectus and (y) it has complied and will comply, as the case may be, with the requirements of Rules 164 and 433 applicable to any Permitted Free Writing Prospectus, including in respect of timely filing with the Commission, legending and record keeping.

(i) The Company will not, without the prior written consent of the Representatives, offer, sell, contract to sell, pledge, or otherwise dispose of, (or enter into any transaction which is designed to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic disposition due to cash settlement or otherwise) by the Company or any affiliate of the Company or any person in privity with the Company or any affiliate of the Company) directly or indirectly, including the filing (or participation in the filing) of a registration statement with the Commission in respect of, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Exchange Act, any debt securities issued or guaranteed by the Company (other than the Securities) or publicly announce an intention to effect any such transaction, during the period from the date of this Agreement through and including the date set forth on Schedule I hereto.

(j) The Company will not take, directly or indirectly, any action designed to or that would constitute or that might reasonably be expected to cause or result in, under the Exchange Act or otherwise, stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities.

6. Conditions to the Obligations of the Underwriters. The obligations of the Underwriters to purchase the Securities shall be subject to the accuracy of the representations and warranties on the part of the Company contained herein as of the Execution Time and the Closing Date, to the accuracy of the statements of the Company made in any certificates pursuant to the provisions hereof, to the performance by the Company of its obligations hereunder and to the following additional conditions:

(a) The Final Prospectus, and any supplement thereto, have been filed in the manner and within the time period required by Rule 424(b); the final term sheet contemplated by Section 5(b) hereto, and any other material required to be filed by the Company pursuant to Rule 433(d) under the Act, shall have been filed with the Commission within the applicable time periods prescribed for such filings by Rule 433; and no stop order suspending the effectiveness of the Registration Statement or any notice that would prevent its use shall have been issued and no proceedings for that purpose shall have been instituted or, to the Company’s knowledge, threatened.

(b) The Company shall have requested and caused Shearman & Sterling LLP, counsel for the Company, to have furnished to the Representatives their opinion, dated the Closing Date and addressed to the Representatives, substantially to the effect that:

(i) the Company is a corporation duly incorporated, validly existing and in good standing under the law of the State of Delaware with corporate power and authority under such law to conduct its business as described in the Preliminary Prospectus and the Final Prospectus;

(ii) the Company (a) has the corporate power to execute, deliver and perform each of this Agreement, the Indenture, the officers’ certificate establishing the form and terms of the Securities pursuant to Sections 201 and 203 of the Indenture and the Securities (the foregoing documents, collectively, the

“Opinion Documents”) to which it is a party and (b) has taken all corporate action necessary to authorize the execution, delivery and performance of each such document to which it is a party;

(iii) the execution and delivery by the Company of each of the Opinion Documents to which it is a party do not, and the performance by the Company of its obligations thereunder will not, (a) result in a violation of the Company’s Amended and Restated Certificate of Incorporation or Amended and Restated By-laws, (b) result in a violation of Generally Applicable Law (defined as the federal law of the United States of America, and the law of the State of New York (including the rules or regulations promulgated thereunder or pursuant thereto), that a New York lawyer exercising customary professional diligence would reasonably be expected to recognize as being applicable to the Company, the Opinion Documents or the transactions governed by the Opinion Documents, and for purposes of the opinions in subparagraphs (i) and (ii) and clause (a) of this subparagraph (iii), the General Corporation Law of the State of Delaware; without limiting the generality of the foregoing definition of Generally Applicable Law, the term “Generally Applicable Law” does not include any law, rule or regulation that is applicable to the Company, the Opinion Documents or such transactions solely because such law, rule or regulation is part of a regulatory regime applicable to any party to any of the Opinion Documents or any of its affiliates due to the specific assets or business of such party or such affiliate), or (c) result in a breach of, a default under or the acceleration of (or entitle any party to accelerate) the maturity of any obligation of the Company under, or result in or require, the creation of any lien upon or security interest in any property of the Company pursuant to the terms of certain identified agreements or documents of the Company;

(iv) no authorization, approval or other action by, and no notice to or filing with, any United States federal or New York governmental authority or regulatory body, or any governmental authority or regulatory body governed by the General Corporation Law of the State of Delaware is required for the due execution, delivery or performance by the Company of any Opinion Document to which it is a party, except as have been obtained and are in full force and effect under the Securities Act or the Trust Indenture Act, in connection with the offer and sale of the Securities, and except for the authorizations, approvals, actions, notices and filings specified in this Agreement, each of which has been duly obtained, taken, given or made and, to the knowledge of such counsel, has not been withdrawn;

(v) this Agreement has been duly executed and delivered by the Company;

(vi) the Indenture has been duly executed and delivered by the Company and is the legal, valid and binding obligation of the Company, enforceable against the Company in accordance with its terms, subject to the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or

similar laws affecting creditors’ rights generally (including without limitation all laws relating to fraudulent transfers) and the effect of general principles of equity, including without limitation concepts of materiality, reasonableness, good faith and fair dealing (regardless of whether considered in a proceeding in equity or at law);

(vii) the Securities have been duly executed by the Company and, when authenticated by the Trustee in accordance with the Indenture and delivered and paid for as provided in this Agreement, the Securities will be the legal, valid and binding obligations of the Company, enforceable against the Company in accordance with their terms and entitled to the benefits of the Indenture, subject to the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally (including without limitation all laws relating to fraudulent transfers) and the effect of general principles of equity, including without limitation concepts of materiality, reasonableness, good faith and fair dealing (regardless of whether considered in a proceeding in equity or at law);

(viii) the Indenture has been duly qualified under the Trust Indenture Act;

(ix) the statements in the Preliminary Prospectus and the Final Prospectus under the caption “Description of senior notes”, insofar as such statements constitute summaries of documents referred to therein, fairly summarize in all material respects the documents referred to therein;

(x) the Company is not, and after giving pro forma effect to the offering and sale of the Securities and the application of the proceeds therefrom, would not be, required to register as an investment company under the Investment Company Act of 1940, as amended.

In addition, the Company shall have requested and caused Shearman & Sterling LLP to have furnished to the Representatives a letter, dated the Closing Date and addressed to the Representatives, substantially to the effect that:

(i) the Registration Statement and the Final Prospectus (other than the financial statements and other financial and statistical information contained or incorporated by reference therein or omitted therefrom and the Trustee’s Statement of Eligibility on Form T-1, as to which such counsel need express no opinion), appears on its face to be appropriately responsive in all material respects to the requirements of the Act and the Trust Indenture Act and the respective rules thereunder; and no facts came to the attention of such counsel which caused it to believe that on the Effective Date the Registration Statement contained any untrue statement of a material fact or omitted to state any material fact required to be stated therein or necessary to make the statements therein not misleading or that the Final Prospectus as of its date and on the Closing Date included or includes any untrue statement of a material fact or omitted or omits to state a material fact

necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading (in each case, other than the financial statements and other financial and statistical information contained or incorporated by reference therein or omitted therefrom and the Trustee’s Statement of Eligibility on Form T-1, as to which such counsel need express no opinion); and

(ii) no facts came to the attention of such counsel which caused it to believe that the Disclosure Package, as of the time of first sale of the Securities to the public, as assumed therein, contained any untrue statement of a material fact or omitted to state any material fact necessary in order to make the statements therein, in the light of circumstances under which they were made, not misleading (other than the financial statements and other financial and statistical information contained or incorporated by reference therein or omitted therefrom and the Trustee’s Statement of Eligibility on Form T-1, as to which such counsel need express no opinion).

In rendering such opinion and letter, such counsel may rely (A) as to matters involving the application of laws of any jurisdiction other than the State of New York, the Delaware General Corporation Law or the Federal laws of the United States, to the extent they deem proper and specified in such opinion and letter, upon the opinion of other counsel of good standing whom they believe to be reliable and who are satisfactory to counsel for the Underwriters and (B) as to matters of fact, to the extent they deem proper, on certificates of responsible officers of the Company and public officials. References to the Final Prospectus in this paragraph (b) shall also include any supplements thereto at the Closing Date.

In addition, the Representatives shall have received from Xxxxxxxx X. Xxxx, Senior Vice President, General Counsel and Corporate Secretary of the Company, an opinion, dated the Closing Date and addressed to the Representatives, substantially to the effect that:

(i) Dun & Bradstreet, Inc. is a corporation duly incorporated, validly existing and in good standing under the law of the State of Delaware;

(ii) all the issued and outstanding capital stock of Dun & Bradstreet, Inc. has been duly authorized and validly issued, is fully paid and nonassessable and, to the best of such counsel’s knowledge, is owned by the Company, directly or through subsidiaries, free and clear of all liens, encumbrances, equities or claims;

(iii) the Company’s authorized equity capitalization is as set forth in the Preliminary Prospectus and the Final Prospectus; and

(iv) such counsel does not know of any litigation or any governmental proceeding instituted or threatened against the Company or any of its consolidated subsidiaries that would be required to be disclosed in the Preliminary Prospectus

or the Final Prospectus and is not so disclosed, and such counsel does not know of any documents that are required to be filed as exhibits to the Registration Statement and are not so filed or of any documents that are required to be summarized in the Preliminary Prospectus and Final Prospectus and are not so summarized.

In rendering such opinion, such counsel may rely (A) as to matters involving the application of laws of any jurisdiction other than the State of New York, the Delaware General Corporation Law or the Federal laws of the United States, to the extent such counsel deems proper and specified in such opinion, upon the opinion of other counsel of good standing whom such counsel believes to be reliable and who are satisfactory to counsel for the Underwriters and (B) as to matters of fact, to the extent such counsel deems proper, on certificates of responsible officers of the Company and public officials. References to the Final Prospectus in this paragraph (b) shall also include any supplements thereto at the Closing Date.

(c) The Representatives shall have received from Xxxxxxxx & Xxxxxxxx LLP, counsel for the Underwriters, such opinion or opinions, dated the Closing Date and addressed to the Representatives, with respect to the issuance and sale of the Securities, the Indenture, the Registration Statement, the Disclosure Package, the Final Prospectus (together with any supplement thereto) and other related matters as the Representatives may reasonably require, and the Company shall have furnished to such counsel such documents as they reasonably request for the purpose of enabling them to pass upon such matters.

(d) The Company shall have furnished to the Representatives a certificate of the Company, signed by the Chief Financial Officer and the Treasurer or the principal accounting officer of the Company, dated the Closing Date, to the effect that the signers of such certificate have carefully examined the Registration Statement, the Final Prospectus, the Disclosure Package and any supplements or amendments thereto and this Agreement and that:

(i) the representations and warranties of the Company in this Agreement are true and correct on and as of the Closing Date with the same effect as if made on the Closing Date and the Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied pursuant to this Agreement at or prior to the Closing Date;

(ii) no stop order suspending the effectiveness of the Registration Statement or any notice that would prevent its use or the use of the Preliminary Prospectus or Final Prospectus has been issued and no proceedings for that purpose have been instituted or, to the Company’s knowledge, threatened by the Commission; and

(iii) since the date of the most recent financial statements included or incorporated by reference in the Final Prospectus (exclusive of any supplement thereto), there has been no change or development that could reasonably be

expected to have a material adverse effect on the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(e) The Company shall have requested and caused PricewaterhouseCoopers LLP to have furnished to the Representatives, at the Execution Time and at the Closing Date, letters (which may refer to letters previously delivered to one or more of the Representatives), dated respectively as of the Execution Time and as of the Closing Date, substantially in the form attached as Annex B hereto confirming that they are an independent registered public accounting firm with respect to the Company within the meaning of the Act and the Exchange Act and the respective applicable rules and regulations thereunder adopted by the Commission and the Public Company Accounting Oversight Board (United States).

(f) Subsequent to the Execution Time or, if earlier, the dates as of which information is given in the Registration Statement (exclusive of any amendment thereof) and the Final Prospectus (exclusive of any supplement thereto), there shall not have been (i) any change or decrease specified in the letter or letters referred to in paragraph (e) of this Section 6 or (ii) any change, or any development involving a prospective change, in or affecting the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto) the effect of which, in any case referred to in clause (i) or (ii) above, is, in the sole judgment of the Representatives, so material and adverse as to make it impractical or inadvisable to proceed with the offering or delivery of the Securities as contemplated by the Registration Statement (exclusive of any amendment thereof), the Disclosure Package and the Final Prospectus (exclusive of any supplement thereto).

(g) Subsequent to the Execution Time, there shall not have been any decrease in the rating of any of the Company’s debt securities by any “nationally recognized statistical rating organization” (as defined in Section 3(a)(62) of the Exchange Act) or any notice given of any intended or potential decrease in any such rating or of a possible change in any such rating that does not indicate the direction of the possible change.

(h) Prior to the Closing Date, the Company shall have furnished to the Representatives such further information, certificates and documents as the Representatives may reasonably request.

If any of the conditions specified in this Section 6 shall not have been fulfilled when and as provided in this Agreement, or if any of the opinions and certificates mentioned above or elsewhere in this Agreement shall not be reasonably satisfactory in form and substance to the Representatives and counsel for the Underwriters, this Agreement and all obligations of the Underwriters hereunder may be canceled at, or at any time prior to, the Closing Date by the Representatives. Notice of such cancellation shall be given to the Company in writing or by telephone or facsimile confirmed in writing.

The documents required to be delivered by this Section 6 shall be delivered at the office of Shearman & Sterling LLP, counsel for the Company, at 000 Xxxxxxxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx, xx the Closing Date.

7. Reimbursement of Underwriters’ Expenses. If the sale of the Securities provided for herein is not consummated because any condition to the obligations of the Underwriters set forth in Section 6 hereof is not satisfied, because of any termination pursuant to Section 10 hereof or because of any refusal, inability or failure on the part of the Company to perform any agreement herein or comply with any provision hereof other than by reason of a default by any of the Underwriters, the Company will reimburse the Underwriters severally through the Representatives on demand for all reasonable out-of-pocket expenses (including reasonable fees and disbursements of counsel) that shall have been incurred by them in connection with the proposed purchase and sale of the Securities.

8. Indemnification and Contribution. (a) The Company agrees to indemnify and hold harmless each Underwriter, the directors, officers, employees and agents of each Underwriter and each person who controls any Underwriter within the meaning of either the Act or the Exchange Act against any and all losses, claims, damages or liabilities, joint or several, to which they or any of them may become subject under the Act, the Exchange Act or other Federal or state statutory law or regulation, at common law or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement of a material fact contained in the registration statement for the registration of the Securities as originally filed or in any amendment thereof, or in the Basic Prospectus, any Preliminary Prospectus, the Final Prospectus, any Issuer Free Writing Prospectus, or in any amendment thereof or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and agrees to reimburse each such indemnified party, as incurred, for any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action; provided, however, that the Company will not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon any such untrue statement or alleged untrue statement or omission or alleged omission made therein in reliance upon and in conformity with written information furnished to the Company by or on behalf of any Underwriter through the Representatives specifically for inclusion therein. This indemnity agreement will be in addition to any liability which the Company may otherwise have.

(b) Each Underwriter severally and not jointly agrees to indemnify and hold harmless the Company, each of its directors, each of its officers who signs the Registration Statement, and each person who controls the Company within the meaning of either the Act or the Exchange Act, to the same extent as the foregoing indemnity from the Company to each Underwriter, but only with reference to written information relating to such Underwriter furnished to the Company by or on behalf of such Underwriter through the Representatives specifically for inclusion in the documents referred to in the foregoing indemnity. This indemnity agreement will be in addition to any liability which

any Underwriter may otherwise have. The Company acknowledges that the statements set forth in the last paragraph of the cover page regarding delivery of the Securities and, under the heading “Underwriting (Conflicts of interest”)”, (i) the list of Underwriters and their respective participation in the sale of the Securities, (ii) the sentences related to concessions and reallowances and (iii) the paragraph related to stabilization, syndicate covering transactions and penalty bids in any Preliminary Prospectus and the Final Prospectus constitute the only information furnished in writing by or on behalf of the several Underwriters for inclusion in any Preliminary Prospectus or the Final Prospectus.

(c) Promptly after receipt by an indemnified party under this Section 8 of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under this Section 8, notify the indemnifying party in writing of the commencement thereof; but the failure to so notify the indemnifying party (i) will not relieve it from liability under paragraph (a) or (b) above unless and to the extent it did not otherwise learn of such action and such failure results in the forfeiture by the indemnifying party of substantial rights and defenses and (ii) will not, in any event, relieve the indemnifying party from any obligations to any indemnified party other than the indemnification obligation provided in paragraph (a) or (b) above. The indemnifying party shall be entitled to appoint counsel of the indemnifying party’s choice at the indemnifying party’s expense to represent the indemnified party in any action for which indemnification is sought (in which case the indemnifying party shall not thereafter be responsible for the fees and expenses of any separate counsel retained by the indemnified party or parties except as set forth below); provided, however, that such counsel shall be satisfactory to the indemnified party. Notwithstanding the indemnifying party’s election to appoint counsel to represent the indemnified party in an action, the indemnified party shall have the right to employ separate counsel (including local counsel), and the indemnifying party shall bear the reasonable fees, costs and expenses of such separate counsel if (i) the use of counsel chosen by the indemnifying party to represent the indemnified party would present such counsel with a conflict of interest, (ii) the actual or potential defendants in, or targets of, any such action include both the indemnified party and the indemnifying party and the indemnified party shall have reasonably concluded that there may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the indemnifying party, (iii) the indemnifying party shall not have employed counsel satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of the institution of such action or (iv) the indemnifying party shall authorize the indemnified party to employ separate counsel at the expense of the indemnifying party. An indemnifying party will not, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any pending or threatened claim, action, suit or proceeding in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified parties are actual or potential parties to such claim or action) unless such settlement, compromise or consent includes an unconditional release of each indemnified party from all liability arising out of such claim, action, suit or proceeding.

(d) In the event that the indemnity provided in paragraph (a), (b) or (c) of this Section 8 is unavailable to or insufficient to hold harmless an indemnified party for any

reason, the Company and the Underwriters severally agree to contribute to the aggregate losses, claims, damages and liabilities (including legal or other expenses reasonably incurred in connection with investigating or defending same) (collectively “Losses”) to which the Company and one or more of the Underwriters may be subject in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and by the Underwriters on the other from the offering of the Securities; provided, however, that in no case shall any Underwriter (except as may be provided in any agreement among underwriters relating to the offering of the Securities) be responsible for any amount in excess of the underwriting discount or commission applicable to the Securities purchased by such Underwriter hereunder. If the allocation provided by the immediately preceding sentence is unavailable for any reason, the Company and the Underwriters severally shall contribute in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Company on the one hand and of the Underwriters on the other in connection with the statements or omissions which resulted in such Losses as well as any other relevant equitable considerations. Benefits received by the Company shall be deemed to be equal to the total net proceeds from the offering (before deducting expenses) received by it, and benefits received by the Underwriters shall be deemed to be equal to the total underwriting discounts and commissions, in each case as set forth on the cover page of the Final Prospectus or any amendment thereto. Relative fault shall be determined by reference to, among other things, whether any untrue or any alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information provided by the Company on the one hand or the Underwriters on the other, the intent of the parties and their relative knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. The Company and the Underwriters agree that it would not be just and equitable if contribution were determined by pro rata allocation or any other method of allocation which does not take account of the equitable considerations referred to above. Notwithstanding the provisions of this paragraph (d), no person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 8, each person who controls an Underwriter within the meaning of either the Act or the Exchange Act and each director, officer, employee and agent of an Underwriter shall have the same rights to contribution as such Underwriter, and each person who controls the Company within the meaning of either the Act or the Exchange Act, each officer of the Company who shall have signed the Registration Statement and each director of the Company shall have the same rights to contribution as the Company, subject in each case to the applicable terms and conditions of this paragraph (d).

9. Default by an Underwriter. If any one or more Underwriters shall fail to purchase and pay for any of the Securities agreed to be purchased by such Underwriter or Underwriters hereunder and such failure to purchase shall constitute a default in the performance of its or their obligations under this Agreement, the remaining Underwriters shall be obligated severally to take up and pay for (in the respective proportions which the principal amount of Securities set forth opposite their names in Schedule II hereto bears to the aggregate principal amount of Securities set forth opposite the names of all the remaining Underwriters) the Securities which the defaulting Underwriter or Underwriters agreed but failed to purchase;

provided, however, that in the event that the aggregate principal amount of Securities which the defaulting Underwriter or Underwriters agreed but failed to purchase shall exceed 10% of the aggregate principal amount of Securities set forth in Schedule II hereto, the remaining Underwriters shall have the right to purchase all, but shall not be under any obligation to purchase any, of the Securities, and if such nondefaulting Underwriters do not purchase all the Securities, this Agreement will terminate without liability to any nondefaulting Underwriter or the Company. In the event of a default by any Underwriter as set forth in this Section 9, the Closing Date shall be postponed for such period, not exceeding five Business Days, as the Representatives shall determine in order that the required changes in the Registration Statement and the Final Prospectus or in any other documents or arrangements may be effected. Nothing contained in this Agreement shall relieve any defaulting Underwriter of its liability, if any, to the Company and any nondefaulting Underwriter for damages occasioned by its default hereunder.

10. Termination. This Agreement shall be subject to termination in the absolute discretion of the Representatives, by notice given to the Company prior to delivery of and payment for the Securities, if at any time prior to such time (i) trading in the Company’s common stock shall have been suspended by the Commission or the New York Stock Exchange or trading in securities generally on the New York Stock Exchange shall have been suspended or limited or minimum prices shall have been established on such Exchange, (ii) a banking moratorium shall have been declared either by Federal or New York State authorities, or (iii) there shall have occurred any outbreak or escalation of hostilities, declaration by the United States of a national emergency or war, or other calamity or crisis the effect of which on financial markets is such as to make it, in the sole judgment of the Representatives, impractical or inadvisable to proceed with the offering, sale or delivery of the Securities as contemplated by the Final Prospectus (exclusive of any supplement thereto).

11. Representations and Indemnities to Survive. The respective agreements, representations, warranties, indemnities and other statements of the Company or its officers and of the Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of any Underwriter or the Company or any of the officers, directors, employees, agents or controlling persons referred to in Section 8 hereof, and will survive delivery of and payment for the Securities. The provisions of Sections 7 and 8 hereof shall survive the termination or cancellation of this Agreement.

12. Notices. All communications hereunder will be in writing and effective only on receipt, and, if sent to the Representatives, will be mailed, delivered or telefaxed to X.X. Xxxxxx Securities LLC, 000 Xxxxxxx Xxxxxx, Xxx Xxxx, XX 00000 Attn: High Grade Syndicate Desk-3rd floor, Fax No. (000) 000-0000 and Barclays Capital Inc., 000 Xxxxxxx Xxxxxx, Xxx Xxxx, XX 00000, Attn: Syndicate Registration, Facsimile: (000) 000-0000; or, if sent to the Company, will be mailed, delivered or telefaxed to (000)-000-0000 and confirmed to it at 000 XXX Xxxxxxx, Xxxxx Xxxxx, XX 00000, attention of the General Counsel, Legal Department.

13. Successors. This Agreement will inure to the benefit of and be binding upon the parties hereto and their respective successors and the officers, directors, employees, agents and controlling persons referred to in Section 8 hereof, and no other person will have any right or obligation hereunder.

14. No fiduciary duty. The Company hereby acknowledges that (a) the purchase and sale of the Securities pursuant to this Agreement is an arm’s-length commercial transaction between the Company, on the one hand, and the Underwriters and any affiliate through which it may be acting, on the other, (b) the Underwriters are acting as principal and not as an agent or fiduciary of the Company and (c) the Company’s engagement of the Underwriters in connection with the offering and the process leading up to the offering is as independent contractors and not in any other capacity. Furthermore, the Company agrees that it is solely responsible for making its own judgments in connection with the offering (irrespective of whether any of the Underwriters has advised or is currently advising the Company on related or other matters). The Company agrees that it will not claim that the Underwriters have rendered advisory services of any nature or respect, or owe an agency, fiduciary or similar duty to the Company, in connection with such transaction or the process leading thereto.

15. Integration. This Agreement supersedes all prior agreements and understandings (whether written or oral) between the Company and the Underwriters, or any of them, with respect to the subject matter hereof.

16. Applicable Law. This Agreement will be governed by and construed in accordance with the laws of the State of New York applicable to contracts made and to be performed within the State of New York.

17. Counterparts. This Agreement may be signed in one or more counterparts, each of which shall constitute an original and all of which together shall constitute one and the same agreement.

18. Headings. The section headings used herein are for convenience only and shall not affect the construction hereof.

19. Definitions. The terms which follow, when used in this Agreement, shall have the meanings indicated.

“Act” shall mean the Securities Act of 1933, as amended, and the rules and regulations of the Commission promulgated thereunder.

“Basic Prospectus” shall mean the prospectus referred to in paragraph 1(a) above contained in the Registration Statement at the Effective Date.

“Business Day” shall mean any day other than a Saturday, a Sunday or a legal holiday or a day on which banking institutions or trust companies are authorized or obligated by law to close in New York City.

“Commission” shall mean the Securities and Exchange Commission.

“Disclosure Package” shall mean (i) the Basic Prospectus, as amended and supplemented to the Execution Time, (ii) the Issuer Free Writing Prospectuses, including the final term sheet prepared and filed pursuant to Section 5(b) hereto, identified in Schedule III hereto, and (iii) any other Free Writing Prospectus that the parties hereto shall hereafter expressly agree in writing to treat as part of the Disclosure Package.

“Effective Date” shall mean each date and time that the Registration Statement and any post-effective amendment or amendments thereto became or become effective.

“Exchange Act” shall mean the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder.

“Execution Time” shall mean the date and time that this Agreement is executed and delivered by the parties hereto.

“Final Prospectus” shall mean the prospectus supplement relating to the Securities that was first filed pursuant to Rule 424(b) after the Execution Time, together with the Basic Prospectus.

“Free Writing Prospectus” shall mean a free writing prospectus, as defined in Rule 405.

“Issuer Free Writing Prospectus” shall mean an issuer free writing prospectus, as defined in Rule 433.

“Preliminary Prospectus” shall mean any preliminary prospectus supplement to the Basic Prospectus that describes the Securities and the offering thereof and is used prior to the filing of the Final Prospectus, together with the Basic Prospectus.

“Registration Statement” shall mean the registration statement referred to in paragraph 1(a) above, including exhibits and financial statements and any prospectus supplement relating to the Securities that is filed with the Commission pursuant to Rule 424(b) and deemed part of such registration statement pursuant to Rule 430B, as amended at the Execution Time and, in the event any post-effective amendment thereto becomes effective prior to the Closing Date, shall also mean such registration statement as so amended.

“Rule 158”, “Rule 163”, “Rule 164”, “Rule 172”, “Rule 405”, “Rule 415”, “Rule 424”, “Rule 430B”, “Rule 433”, “Rule 456”, “Rule 457” and “Rule 462” refer to such rules under the Act.

“Trust Indenture Act” shall mean the Trust Indenture Act of 1939, as amended and the rules and regulations of the Commission promulgated thereunder.

If the foregoing is in accordance with your understanding of our agreement, please sign and return to us the enclosed duplicate hereof, whereupon this letter and your acceptance shall represent a binding agreement among the Company and the several Underwriters.


Very truly yours,

THE DUN & BRADSTREET CORPORATION

By:	/s/ Xxxxxxx X. Xxxxxxx
	Name:	Xxxxxxx X. Xxxxxxx
	Title:	Senior Vice President and Chief Financial Officer

By:	/s/ Xxxxx Xxxxxxxxxx
	Name:	Xxxxx Xxxxxxxxxx
	Title:	Treasurer and Investor Relations Officer

SIGNATURE PAGE TO THE UNDERWRITING AGREEMENT


The foregoing Agreement is hereby confirmed and accepted as of the date specified in Schedule I hereto.

BARCLAYS CAPITAL INC.

By:	/s/ Xxxxxx Xxxxxxx
	Name:	Xxxxxx Xxxxxxx
	Title:	Director

X.X. XXXXXX SECURITIES LLC

By:	/s/ Xxxxxx Xxxxxxxxx
	Name:	Xxxxxx Xxxxxxxxx
	Title:	Vice President

For themselves and the other several Underwriters, if any, named in Schedule II to the foregoing Agreement.

SIGNATURE PAGE TO THE UNDERWRITING AGREEMENT

Annex A

Significant Subsidiaries

Dun & Bradstreet, Inc.

Annex B

Text of Comfort Letter

November 28, 2012

The Dun & Bradstreet Corporation

000 XXX Xxxxxxx

Xxxxx Xxxxx, XX 00000

and

Barclays Capital Inc.

000 Xxxxxxx Xxxxxx

Xxx Xxxx, XX 00000

and

X.X. Xxxxxx Securities LLC

000 Xxxxxxx Xxxxxx

Xxx Xxxx, XX 00000

as representatives of the several underwriters named in Schedule II to the underwriting agreement

Ladies and Gentlemen:

We have audited:

the consolidated financial statements of The Dun & Bradstreet Corporation (the “Company”) as of December 31, 2011 and 2010 and for each of the three years in the period ended December 31, 2011 included in the Company’s annual report on Form 10-K for the year ended December 31, 2011 (the “Form 10-K”), and

the effectiveness of the Company’s internal control over financial reporting as of December 31, 2011.

The consolidated financial statements referred to above are all incorporated by reference in the registration statement (No. 333-182222) on Form S-3 filed by the Company under the Securities Act of 1933 (the “Act”); our report with respect thereto is also incorporated by reference in such registration statement. Such registration statement, including the prospectus dated June 19, 2012, and the preliminary prospectus supplement dated November 28, 2012 is herein referred to as the “Registration Statement.”

In connection with the Registration Statement:

We are an independent registered public accounting firm with respect to the Company within the meaning of the Act and the applicable rules and regulations thereunder adopted by the Securities and Exchange Commission (“SEC”) and the Public Company Accounting Oversight Board (United States) (“PCAOB”).

In our opinion, the consolidated financial statements audited by us and incorporated by reference in the Registration Statement comply as to form in all material respects with the applicable accounting requirements of the Act and the Securities Exchange Act of 1934 and the related rules and regulations adopted by the SEC. It should be noted that the Company has not restated its consolidated financial statements as of December 31, 2011 and 2010 and for each of the three years in the period ended December 31, 2011 to reflect its change in segments, including divested business disclosures.

We have not audited any financial statements of the Company as of any date or for any period subsequent to December 31, 2011; although we have conducted an audit for the year ended December 31, 2011, the purpose (and therefore the scope) of such audit was to enable us to express our opinion on the consolidated financial statements as of December 31, 2011 and for the year then ended, but not on the financial statements for any interim period within such year. Therefore, we are unable to and do not express any opinion on the unaudited consolidated balance sheets and the unaudited consolidated statements of operations and comprehensive income, of cash flows and of changes in stockholders’ equity (deficit) included in the Company’s quarterly reports on Form 10-Q for the quarters ended March 31, 2012, June 30, 2012, and September 30, 2012, incorporated by reference in the Registration Statement, or on the financial position, results of operations or cash flows as of any date or for any period subsequent to December 31, 2011. Also, we have not audited the Company’s internal control over financial reporting as of any date subsequent to December 31, 2011. Therefore, we do not express any opinion on the Company’s internal control over financial reporting as of any date subsequent to December 31, 2011.

For purposes of this letter, we have read the minutes of the 2012 meetings of the stockholders, the Board of Directors, Audit Committee, Compensation & Benefits Committee, Innovation & Technology Committee and Board Affairs Committee of the Company as set forth in the minute books at November 23, 2012, officials of the Company having advised us that the minutes of all such meetings through that date were set forth therein except for the minutes of the November 19, 2012 Board Affairs Committee, November 5, 2012 Audit Committee, the November 6, 2012 Audit Committee, the November 1, 2012 Audit Committee, the October 15-16, 2012 Board of Directors, and the October 15, 2012 Audit Committee, Compensation & Benefits Committee, Innovation & Technology Committee, which were not approved in final form, for which drafts or meeting agendas were provided to us; officials of the Company have represented that such drafts include all substantive actions taken at such meetings, and have carried out other procedures to November 23, 2012 (our work did not extend to the period from November 24, 2012 to November 28, 2012, inclusive) as follows:

With respect to the three-month periods ended March 31, 2012 and 2011, the three and six-month periods ended June 30, 2012 and 2011, and the three and nine-month periods ended September 30, 2012 and 2011, we have:

(i)

performed the procedures (completed on May 8, 2012, August 9, 2012, and November 1, 2012, respectively) specified by the PCAOB for a review of interim financial information as described in PCAOB AU 722, Interim Financial Information, on the unaudited consolidated financial statements as of March 31, 2012 and for the three-month periods ended March 31, 2012 and 2011, as of June 30, 2012 and for the three and six-month periods ended June 30, 2012 and 2011 and as of September 30, 2012 and for the three and nine-month periods ended September 30, 2012 and 2011, included in the Company’s quarterly report on Form 10-Q for the quarters ended March 31, 2012, June 30, 2012 and September 30, 2012, incorporated by reference in the Registration Statement; and

(ii)

inquired of certain officials of the Company who have responsibility for financial and accounting matters whether the unaudited consolidated financial statements referred to in a.(i) above comply as to form in all material respects with the applicable accounting requirements of the Securities Exchange Act of 1934 as it applies to Form 10-Q and the related rules and regulations adopted by the SEC.

With respect to the period from October 1, 2012 to October 31, 2012, we have

(i)

read the unaudited consolidated financial data of the Company for October of both 2012 and 2011 furnished us by the Company, officials of the Company having advised us that no such financial data as of any date or for any period subsequent to October 31, 2012 were available. The financial information for October of both 2012 and 2011 is incomplete in that it omits the statement of cash flows and other disclosures.

(ii)

inquired of certain officials of the Company who have responsibility for financial and accounting matters as to whether the unaudited consolidated financial data referred to in b.(i) above are stated on a basis substantially consistent with that of the audited consolidated financial statements incorporated by reference in the Registration Statement.

The foregoing procedures do not constitute an audit conducted in accordance with standards of the PCAOB. Also, they would not necessarily reveal matters of significance with respect to the comments in the following paragraph. Accordingly, we make no representations as to the sufficiency of the foregoing procedures for your purposes.

5.	Nothing came to our attention as a result of the foregoing procedures, however, that caused us to believe that:

(i) Any material modifications should be made to the unaudited consolidated financial statements described in 4.a.(i), incorporated by reference in the Registration Statement, for them to be in conformity with generally accepted accounting principles.

(ii) The unaudited consolidated financial statements described in 4.a.(i) do not comply as to form in all material respects with the applicable accounting requirements of the Securities Exchange Act of 1934 as it applies to Form 10-Q and the related rules and regulations adopted by the SEC.

(i) At October 31, 2012 there was any change in the capital stock, increase in consolidated long-term debt, or decrease in consolidated net current assets (working capital) or stockholders’ equity of the Company as compared with amounts shown in the September 30, 2012 unaudited consolidated balance sheet incorporated by reference in the Registration Statement, or

(ii) For the period from October 1, 2012 to October 31, 2012, there were any decreases, as compared with the corresponding period in the preceding year, in consolidated revenues or in the total or per-share amounts of net income, except in all instances for changes, increases or decreases which the Registration Statement discloses have occurred or may occur and except that the unaudited consolidated financial data for October 31, 2012 and 2011, which we were furnished by the Company, showed changes in the following:


(i)	Capital Stock		Long Term Debt		Net Current Assets
September 30, 2012	$	262.5	$	623.9	($	615.8	)
October 31, 2012	$	263.5	$	624.7	($	665.4	)


(ii)	Consolidated Revenues		Total Net Income		Diluted Earnings per share
October 31, 2011	$	130.3	$	15.1	$	0.31
October 31, 2012	$	116.5	$	8.4	$	0.19

As mentioned in 4.b., Company officials have advised us that no consolidated financial data as of any date or for any period subsequent to October 31, 2012 are available; accordingly, the procedures carried out by us with respect to changes in financial statement items after October 31, 2012 have, of necessity, been even more limited than those with respect to the periods referred to in 4. We have inquired of certain officials of the Company who have responsibility for financial and accounting

matters as to whether (a) at November 23, 2012 there was any change in the capital stock, increase in long-term debt, or decrease in consolidated net current assets (working capital) or stockholders’ equity of the Company as compared with amounts shown in the September 30, 2012 unaudited consolidated balance sheet incorporated by reference in the Registration Statement; or (b) for the period from October 1, 2012 to November 23, 2012, there were any decreases, as compared with the corresponding period in the preceding year, in consolidated revenues or the total or per-share amounts of net income attributable to The Dun & Bradstreet Corporation.

Those officials referred to above stated that they cannot comment on any such changes, increases or decreases in consolidated net current assets (working capital), stockholders’ equity (deficit), consolidated revenues, or the total or per-share amounts of net income attributable to The Dun & Bradstreet Corporation for the periods referred to above.

On the basis of these inquiries and our reading of the minutes as described in 4, nothing came to our attention that caused us to believe that there was any such change in capital stock, except in all instances for changes, increases or decreases which the Registration Statement discloses have occurred or may occur and except as described in the following sentence. We have been informed by officials of the Company that there continues to be an increase in long term debt that is estimated to be approximately $60 million.

For purposes of this letter, we have also read the items identified by you on the attached copy of the prospectus and prospectus supplement forming part of the Registration Statement and the information incorporated by reference in the Registration Statement and have performed the following procedures, which were applied as indicated with respect to the letters explained below. We make no comment as to whether the SEC would view any non-GAAP financial information included or incorporated by reference in the document as being compliant with the requirements of Regulation G or Item 10 of Regulation S-K.

Compared to or recomputed from a corresponding amount included in the Company’s audited financial statements incorporated by reference in the Registration Statement and found such amounts to be in agreement.

However, it should be noted that the Company has not restated its consolidated financial statements as of December 31, 2011 and 2010 and for each of the three years in the period ended December 31, 2011 to reflect its change in segments, including divested business disclosures.

Compared to or recomputed from a schedule prepared by the Company from its accounting records and found such amounts to be in agreement. We (a) compared the amounts on the schedule to corresponding amounts appearing in the accounting records and found such amounts to be in agreement and (b) determined that the schedule was mathematically correct (after giving effect to rounding, if applicable).

It should be noted that non-core gains and (charges) is not a measure of operating performance or liquidity defined by generally accepted accounting principles and may not be comparable to similarly titled measures presented by other companies. We make no comment about the company’s definition, calculation or presentation of non-core gains and (charges) or its usefulness for any purposes.

It should be noted that non-core gains and (charges) is not a measure of operating performance or liquidity defined by generally accepted accounting principles and may not be comparable to similarly titled measures presented by other companies. We make no comment about the Company’s definition, calculation or presentation of non-core gains and (charges) or its usefulness for any purposes.

Compared to or recomputed from a corresponding amount included in the Company’s audited financial statements not incorporated by reference in the Registration Statement and found such amounts to be in agreement.

Compared to or recomputed from a corresponding amount included in the Company’s unaudited financial statements incorporated by reference in the Registration Statement and found such amounts to be in agreement.

Compared to or recomputed from a corresponding amount included in the Company’s accounting records and found such amounts to be in agreement (after giving effect to rounding, if applicable).

Recomputed from a schedule prepared by the Company from the accounting records by dividing the amount of traditional and value-added solutions, respectively, by total revenues or core revenues for each customer solution set. We (a) compared the amounts on the schedule to corresponding amounts appearing in the accounting records and found such amounts to be in agreement and (b) determined that the schedule was mathematically correct (after giving effect to rounding, if applicable). However, we make no comment as to the appropriateness or manner in which such classifications between traditional and value-added solutions have been made.

It should be noted that traditional and value-added solutions, total revenue and core revenue are not measures of operating performance or liquidity defined by generally accepted accounting principles and may not be comparable to similarly titled measures presented by other companies. We make no comment about the company’s definition, calculation or presentation of traditional and value-added solutions, total revenue and core revenue or their usefulness for any purposes.

It should be noted that total revenue, divested & other businesses, core revenue, non-core gains/charges, changes before the effect of foreign exchange, and impact on effective tax rate are not measures of operating performance or liquidity defined by generally accepted accounting principles and may not be comparable to similarly titled measures presented by other companies. We make no comment about the company’s definition, calculation or presentation of total revenue, core revenue, non-core gains/charges, changes before the effect of foreign exchange, impact on effective tax rate or their usefulness for any purposes.

Compared the information included under the heading “Ratio of Earnings to Fixed Charges” to a schedule prepared by the Company from its accounting records and found such amounts to be in agreement. We (a) compared the amounts on the schedule to corresponding amounts appearing in the accounting records and found such amounts to be in agreement and (b) determined that the schedule was mathematically correct (after giving effect to rounding, if applicable).

However, we make no comment regarding the reasonableness of the Company’s assumptions relating to the interest portion of its operating leases.

Recomputed from the actual column for the proposed use of proceeds of the notes to be offered by means of the Registration Statement as described under “Use of Proceeds” and found such amounts to be in agreement. However, we make no comment as to whether the sale of the notes will be consummated and the use of proceeds as described therein will actually occur.

However, we make no comment regarding the completeness or appropriateness of the Company’s determination of what constitutes executive compensation for purposes of the SEC disclosure requirements on executive compensation.

However, we make no comment regarding the share repurchase program this activity occurred under.

We compared the information included under the heading “Selected Financial Data” with the requirements of item 301 of Regulation S-K. We also inquired of certain officials of the Company who have responsibility for financial and accounting matters whether this information conforms in all material respects with the disclosure requirements of item 301 of Regulation S-K. Nothing came to our attention as a result of the foregoing procedures that caused us to believe that this information does not conform in all material respects with the disclosure requirements of item 301 of Regulation S-K.

Our audit of the consolidated financial statements for the periods referred to in the introductory paragraph of this letter comprised audit tests and procedures deemed necessary for the purpose of expressing an opinion on such financial statements taken as a whole. For none of the periods referred to therein, or any other period, did we perform audit tests for the purpose of expressing an opinion on individual balances of accounts or summaries of selected transactions such as those enumerated above, and, accordingly, we express no opinion thereon.

It should be understood that we make no representations regarding questions of legal interpretation or regarding the sufficiency for your purposes of the procedures enumerated in the second preceding paragraph; also, such procedures would not necessarily reveal any material misstatement of the amounts or percentages listed above. Further, we have addressed ourselves solely to the foregoing data as set forth in the Registration Statement and make no representations regarding the adequacy of disclosure or regarding whether any material facts have been omitted.

10.

This letter is solely for the information of the addressees and to assist the underwriters in conducting and documenting their investigation of the affairs of the Company in connection with the offering of the securities covered by the Registration Statement, and is not to be used, circulated, quoted, or otherwise referred to within or without the underwriting group for any other purpose, including but not limited to the registration, purchase, or sale of securities, nor is it to be filed with or referred to in whole or in part in the Registration Statement or any other document, except that reference may be made to it in the underwriting agreement or in any list of closing documents pertaining to the offering of the securities covered by the Registration Statement.

Very truly yours,

SCHEDULE I

Underwriting Agreement dated November 28, 2012

Registration Statement No. 333-182222

Representatives: Barclays Capital Inc., X.X. Xxxxxx Securities LLC

Title, Purchase Price and Description of Securities:

Title: 3.250% Senior Notes Due 2017 (the “2017 Notes”) and 4.375% Senior Notes Due 2022 (the “2022 Notes” and, together with the 2017 Notes, the “Senior Notes”)

Principal amount: $450,000,000 for the 2017 Notes and $300,000,000 for the 2022 Notes

Purchase price (include accrued

interest or amortization, if

any): $447,259,500 for the 2017 Notes and $295,131,000 for the 2022 Notes

Sinking fund provisions: None.

Redemption provisions: The 2017 Notes will be redeemable in whole or in part, at our option at any time and from time to time prior to maturity at a redemption price equal to the greater of (i) 100% of the principal amount of the 2017 Notes to be redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest in respect of the 2017 Notes to be redeemed (not including any portion of such payments of interest accrued as of the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of 12 30-day months) at the Treasury Rate plus 40 basis points plus, in each case, accrued and unpaid interest on the 2017 Notes to be redeemed to, but excluding, the date of redemption.

Prior to September 1, 2022, the 2022 Notes will be redeemable in whole or in part, at our option at any time and from time to time at a redemption price equal to the greater of (i) 100% of the principal amount of the 2022 Notes to be redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest in respect of the 2022 Notes to be redeemed (not including any portion of such payments of interest accrued as of the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of 12 30-day months) at the Treasury Rate plus 45 basis points plus, in each case, accrued and unpaid interest on the 2022 Notes to be redeemed to, but excluding, the date of redemption.

On or after September 1, 2022, the 2022 Notes will be redeemable in whole or in part, at our option at any time and from time to time prior to maturity at a redemption price equal to 100% of the principal amount of the 2022 Notes to be redeemed plus, in each case, accrued and unpaid interest on the 2022 Notes to be redeemed to, but excluding, the date of redemption.

“Comparable Treasury Issue” means the United States Treasury security selected by the Reference Treasury Dealers as having a maturity comparable to the remaining term of the Senior Notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Senior Notes.

“Reference Treasury Dealer” means (i) each of Barclays Capital Inc. and X.X. Xxxxxx Securities LLC and their respective successors unless any of them ceases to be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), in which case the Company shall substitute another Primary Treasury Dealer, and (2) any other two Primary Treasury Dealers selected by the Company.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the trustee by that Reference Treasury Dealer at 3:30 p.m., New York City time, on the third business day preceding that redemption date.

“Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semiannual equivalent yield to maturity (computed as of the third business day immediately preceding that redemption date) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Reference Treasury Dealer Quotations for that redemption date.

Closing Date, Time and Location: December 3, 2012 at 10:00 a.m at 000 Xxxxxxxxx Xxxxxx, Xxx Xxxx, XX 00000

Type of Offering: Non-delayed

Date referred to in Section 5(i) after which the Company may offer or sell debt securities issued or guaranteed by the Company without the consent of the Representative(s): the Closing Date

SCHEDULE II


Underwriters	Principal Amount of 2017 Notes to be Purchased		Principal Amount of 2022 Notes to be Purchased

X.X. Xxxxxx Securities LLC	$	126,000,000	$	84,000,000
Barclays Capital Inc.		117,000,000		78,000,000
HSBC Securities (USA) Inc.		54,000,000		36,000,000
Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated		54,000,000		36,000,000
Mitsubishi UFJ Securities (USA), Inc.		36,000,000		24,000,000
RBS Securities Inc.		36,000,000		24,000,000
Citigroup Global Markets Inc.		13,500,000		9,000,000
Xxxxx Fargo Securities, LLC		13,500,000		9,000,000

Total	$	450,000,000	$	300,000,000

SCHEDULE III

(1) Final Terms and Conditions, dated November 28, 2012, for $450,000,000 aggregate principal amount of 3.250% Senior Notes due 2017 and $300,000,000 aggregate principal amount of 4.375% Senior Notes due 2022, filed with the Commission by the Company pursuant to Rule 433 under the Securities Act.

SCHEDULE IV

TERM SHEET

$450,000,000 3.250% Senior Notes due 2017 (“2017 Notes”)

$300,000,000 4.375% Senior Notes due 2022 (“2022 Notes”)


Issuer:		The Dun & Bradstreet Corporation
Size:		2017 Notes: $450,000,000 2022 Notes: $300,000,000
Security Type:		Senior Notes
Coupon:		2017 Notes: 3.250% 2022 Notes: 4.375%
Maturity:		2017 Notes: December 1, 2017 2022 Notes: December 1, 2022
Trade Date		November 28, 2012
Price to Public:		2017 Notes: 99.991% 2022 Notes: 99.027%
Yield:		2017 Notes: 3.252% 2022 Notes: 4.497%
Spread:		2017 Notes: T + 262.5 bps 2022 Notes: T + 287.5 bps
Benchmark Treasury:		2017 Notes: 0.750% due October 31, 2017 2022 Notes: 1.625% due November 15, 2022
Benchmark Treasury Price and Yield:		2017 Notes: 100-19; 0.627% 2022 Notes: 100-01; 1.622%
Coupon Dates:		June 1 and December 1
First Coupon:		June 1, 2013
Settlement:		December 3, 2012 (T+3), interest will accrue from the settlement date
Make Whole Call:		2017 Notes: Callable at any time at the greater of par and the make whole redemption price (Treasury plus 40 basis points) 2022 Notes: Callable at any time prior to September 1, 2022 at the greater of par and the make whole redemption price (Treasury plus 45 basis points); on or after September 1, 2022, callable at any time at par


CUSIP / ISIN:		2017 Notes: 26483E AF7 / US26483EAF79 2022 Notes: 26483E AG5 / US26483EAG52
Joint Bookrunning Managers:		Barclays Capital Inc. X.X. Xxxxxx Securities LLC HSBC Securities (USA) Inc. Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated
Co-Managers:		Mitsubishi UFJ Securities (USA), Inc. RBS Securities Inc. Citigroup Global Markets Inc. Xxxxx Fargo Securities, LLC

Note: A securities rating is not a recommendation to buy, sell or hold a security and may be subject to revision or withdrawal at any time.

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering.

You may get these documents for free by visiting XXXXX on the SEC Web site at xxx.xxx.xxx. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by contacting Barclays Capital Inc. toll-free at (000) 000-0000; or X.X. Xxxxxx Securities LLC collect at 000-000-0000.

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The Dun & Bradstreet Corporation Underwriting Agreement

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