The undersigned hereby agrees to be bound by the terms and conditions of the Employment Security
Plan of Internap Network Services, Inc., dated as of November 14, 2007, as if he or she initially had executed
such Plan as a party thereto, and, without by implication limiting the foregoing, agrees to each acknowledgment,
covenant and other agreement contained therein.
INTERNAP NETWORK SERVICES, INC.
By:/s/ Randal R. Thompson
December 23, 2007
By: /s/ Richard P. Dobb
Date:December 23, 2007