Internap to Release Q1 2009 Financial Results on Thursday, May 7, 2009

ATLANTA, GA, April 24, 2009 — Internap Network Services Corporation (NASDAQ: INAP), a global provider of end-to-end Internet business solutions, will host a conference call briefing with senior management on Thursday, May 7, 2009 at 5:00 p.m. EDT, to discuss the company’s financial results for the first quarter 2009.

Participants may access the call by dialing 888-230-5495. International callers should dial 913-312-1412. Listeners may also connect to the simultaneous webcast available from the investor relations section of the company’s web site at https://ir.inap.com/events.cfm. A replay of the call will be accessible from Thursday, May 7, 2009 at 8 p.m. EDT through Wednesday, May 13, 2009 at 888-203-1112 using the replay code 4345407. International callers can access the archived event at 719-457-0820 with the same code.