ATLANTA, GA – (October 23, 2007) – Internap Network Services Corporation (NASDAQ: INAP), a global provider of end-to-end Internet business solutions, today announced it is providing its Flow Control Platform (FCP) to enhance network performance for Defender Hosting. Through the FCP, Internap’s intelligent route-control technology enables Defender Hosting to provide a superior managed hosting service to its 9,000 customers.

In pursuit of a way to better manage bandwidth and resolve operational expenditures used to manually troubleshoot their network, Defender Hosting selected Internap based on their high-quality technology and track record of successful, automated network optimization. As a result, Defender Hosting has experienced a seamless improvement in traffic management, reduced latency and packet loss and decreased Internet routing issues.

“Internap is known for its quick turnaround and high-quality, cutting-edge technology for network maintenance and management,” said Thomas Kiblin, CEO of Defender Hosting. “Thanks to Internap, we can focus on serving our customers and delivering them a quality experience.”

Internap’s FCPs intelligently route traffic across Defender Hosting’s network while managing connectivity. In addition, the technology is configured to route based on cost, performance and application. The FCP improves transfer speeds and features robust reporting tools for tracking comprehensive network performance data over multiple service providers.

“Our mission is to enable our customers to focus on their core businesses and we are pleased Defender Hosting can rely on our sophisticated technology,” said Tim Sullivan, chief technology officer for Internap. “Through our robust suite of services, customers like Defender Hosting can continue to enjoy cost savings and improved performance.”

The Internap FCP product line includes solutions to manage traffic from 10 megabits per second up to 10 gigabits per second and beyond. Features include intelligent load balancing, which increases the overall efficiency of managing bandwidth costs while providing visibility into network performance. The FCP is scalable to support the growing bandwidth requirements of Web-centric businesses. The FCP’s measurement tool, FlowView™, also allows customers to proactively address impacts from software and application changes. Staff can pinpoint problems quickly and use end-to-end visibility to make informed decisions. Reporting to executive management is simplified, allowing customers to monitor application performance using real-time statistics on metrics such as packet loss, latency and jitter.



About Defender Hosting
A leader in the rapidly growing managed virtualization hosting market, Defender Hosting has deployed over 10,000 virtual machines for businesses of all sizes across the globe. From our design, deployment, monitoring, and management services, Defender Hosting allows its customers to focus on their core business, and not worry about their online presence or hosted applications. For more information, please visit www.deftechgroup.com 
or call 703-621-3565.

About Internap
Internap is a leading Internet solutions company that provides The Ultimate Online Experience^™ by managing, delivering and distributing applications and content with unsurpassed performance and reliability. With a global platform of data centers, managed Internet services, a content delivery network (CDN) and content monetization services, Internap frees its customers to innovate 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. 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.