ATLANTA — July 19, 2007 - Internap Network Services Corporation (NASDAQ:INAP), a global provider of fast, reliable end-to-end Internet business solutions, today announced the completion of its origin point of presence (PoP) in London, improving Internap’s ability to provide content delivery services on a global scale. The build-out offers superior content delivery to Internap’s global customer base, such as BuyTV.com, Disney and Salesforce.com, utilizing high-capacity redundancy. Internap’s content delivery network (CDN) is enhanced by its unique intelligent architecture, which is the industry’s only solution that routes Internet traffic across the best path to improve end-to-end performance.

The London PoP, which is the first of three major locations announced for expansion in April 2007, significantly improves Internap’s ability to generate multi-national customer contracts and sell more services to new and existing customers. Simultaneously, the build-out allows Internap customers to experience consistent, high-quality content delivery solutions , regardless of size, location, and type of content. Including London, Internap now has 43 global service delivery points and nine major CDN delivery points located in Los Angeles, Seattle, Atlanta, Silicon Valley, Chicago, Washington, D.C. and Amsterdam.

“This expansion is part of Internap’s plan to accelerate growth and scale the business, while improving our ability to manage, deliver, distribute and monetize customer’s Web assets,” said James P. DeBlasio, president and chief executive officer of Internap. “Internap’s approach to managing the CDN build-out ensures that we leverage existing technology assets and manage capital expenditures within strict financial guidelines. We are expanding our facilities and services to meet the enterprise needs created by an emerging wave of rich media-based communications.”

Internap will store and deliver content at the London PoP to improve the speed and delivery of customer’s rich media applications, such as software, video and audio streams. The London PoP features fault-tolerant storage architecture, traffic load balancing and disaster-proof redundancy, which will dramatically improve performance and reliability in the region.

The expanded CDN also takes advantage of Internap’s unique multi-carrier architecture, which uses Private Network Access Points (P-NAPs) to speed Internet traffic from one location to another, allowing customers to avoid the congestion and bottlenecks of traditional single-carrier networks. Internap's CDN overlays its P-NAPs architecture at critical points, connecting directly to multiple Internet backbones to ensure optimal delivery of Web-based applications.

“The launch of Internap’s London PoP improves our ability to service global contracts,” said Philip N. Kaplan, chief strategy officer of Internap. “Live, on-demand and progressive downloads all need the scale, capacity and global features that Internap offers. With completion of this major service point, we can ensure a high-quality user experience, while saving companies from the expense and rigors of building, managing and maintaining an in-house network solution.”

About Internap
Internap is a leading Internet solutions provider that manages, delivers and distributes applications and content with unsurpassed performance and reliability. With a global platform of data centers, managed IP services, content delivery network (CDN) and content monetization services, Internap frees its customers to drive innovation inside their business and create new revenue opportunities. More than 3,000 companies across the globe trust Internap to help them achieve their Internet business goals. Internap is “Making Innovation Possible.” For more information visit www.internap.com.

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 Internap's 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; the ability to successfully integrate the operations of Internap and VitalStream Holdings, Inc.; and our ability to protect our intellectual property.

Our Annual Report on Form 10-K/A, subsequent 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.