0001193125-07-002498 Sample Contracts

FIRST SUPPLEMENTAL INDENTURE Dated as of January 3, 2007

First Supplemental Indenture • January 8th, 2007 • Broadwing Corp • Telephone communications (no radiotelephone) • New York

• Contract Type
  First Supplemental Indenture
• Filed
  January 8th, 2007
• Company
  Broadwing Corp
• Industry
  Telephone communications (no radiotelephone)
• Jurisdiction
  New York

THIS FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of January 3, 2007, by and among Broadwing Corporation, a Delaware corporation (the “Company”), the guarantors party hereto (the “Guarantors”), Level 3 Communications, Inc., a Delaware corporation (“Parent Guarantor”), and The Bank of New York Trust Company, National Association (as successor in interest to J.P. Morgan Trust Company, National Association), as Trustee (the “Trustee”).

BROADWING CORPORATION

Second Supplemental Indenture • January 8th, 2007 • Broadwing Corp • Telephone communications (no radiotelephone) • New York

• Contract Type
  Second Supplemental Indenture
• Filed
  January 8th, 2007
• Company
  Broadwing Corp
• Industry
  Telephone communications (no radiotelephone)
• Jurisdiction
  New York

THIS SECOND SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of January 3, 2007, by and among Broadwing Corporation, a Delaware corporation (the “Company”), the guarantors party hereto (the “Guarantors”), Level 3 Communications, Inc., a Delaware corporation (“Parent Guarantor”), Level 3 Colorado, Inc., a Delaware corporation (“Sister Subsidiary”), and The Bank of New York Trust Company, National Association (as successor in interest to J.P. Morgan Trust Company, National Association), as Trustee (the “Trustee”).