ATLANTA,February 25, 2009 — Internap Network Services Corporation (NASDAQ: INAP), a global provider of end-to-end Internet business solutions, will host a conference call briefing with Internap’s senior management on Thursday, March 12, 2009 at 5:00 p.m. EDT, to discuss the company’s financial results for the fourth quarter and full-year 2008.

Participants may access the call by dialing 888-599-4884. International callers should dial 913-312-0654. Listeners may also connect to the simultaneous webcast available from the investor relations section of the company’s web site at http://ir.internap.com/events.cfm. A replay of the call will be accessible from Thursday, March 12 at 8 p.m. EDT through Wednesday, March 18 at 888-203-1112 using the replay code 4577308. International callers can access the archived event at 719-457-0820 with the same code.

About Internap

Internap is a leading Internet solutions company that provides The Ultimate Online Experience™ by managing, delivering and distributing applications and content with 100% performance and reliability. With a global platform of data centers, managed Internet services and a content delivery network (CDN), Internap frees its customers to innovate their business, improve service levels, and lower the cost of IT operations. More than 3,000 companies across the globe trust Internap to help them achieve their Internet business goals. For more information, visit internap.josh.ux.voxel.net.

Internap “Safe Harbor” Statement

Certain information included in this press release constitutes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, including, among others, statements regarding the performance of our products, business strategy, projected levels of growth and projected costs, are forward-looking statements. Those statements include statements regarding the intent, belief or current expectations of Internap and members of our management team, as well as the assumptions on which such statements are based. Forward-looking statements are not guarantees of future performance and involve risks and uncertainties that actual results may differ materially from those contemplated by forward-looking statements. Other important factors that may affect Internaps business, products, results of operations and financial condition include, but are not limited to: our ability to sustain profitability; our ability to respond successfully to technological change; the availability of services from Internet network service providers or network service providers providing network access loops and local loops on favorable terms, or at all; failure of third party suppliers to deliver their products and services on favorable terms, or at all; failures in our network operations centers, network access points or computer systems; and our ability to protect our intellectual property.

Our Annual Report on Form 10-K/A, Quarterly Reports on Form 10-Q, recent Current Reports on Form 8-K and other Securities and Exchange Commission filings discuss the foregoing risks, as well as other important risk factors that could contribute to such differences or otherwise affect our business, results of operations and financial condition. We undertake no obligation to revise or update any forward-looking statement for any reason.

Press Contact

Kristen Keller, Calysto Communications
404-266-2060 ext. 26
internap@calysto.com

Investor Contact:

Andrew McBath
(404) 865-7198
amcbath@internap.com