AGREEMENT JOINT FILING OF SCHEDULE 13D

CUSIP No. 00000X000 

EXHIBIT 1

AGREEMENT
JOINT FILING OF SCHEDULE 13D

The undersigned hereby agree to jointly prepare and file with regulatory authorities this Schedule 13D and any future amendments thereto reporting each of the undersigned’s ownership of securities of AboveNet, Inc., and hereby affirm that such Schedule 13D is being filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the other, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

Date: November 30, 2011	CORVEX MANAGEMENT LP
	By:	/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Managing Partner
Date: November 30, 2011	XXXXX XXXXXXX
	By:	/s/ Xxxxx Xxxxxxx