Centerline Capital Group Goes All Internap.

Leading Real Estate Finance and Investment Company (Formerly CharterMac and ARCap) Upgrades Services; Optimizes Triple Play Enterprise Network

ATLANTA -- Internap Network Services Corporation (NASDAQ: INAP), a provider of choice for the world's elite businesses on the Internet, today announced that Centerline Capital Group ("Centerline", formerly CharterMac and ARCap) selected Internap as its exclusive solutions provider for the delivery of all video, voice and data traffic on the Centerline enterprise network. Centerline, including its New York headquarters and eight US branch offices, joins a growing list of leading real-estate finance and investment companies that depend on Internap's high performance IP solutions to service their communications requirements.

To better manage increased video, voice (VoIP) and data office-to-office communications, Centerline is also upgrading its Internap Performance IP[TM] internet connectivity service to 10 Mbps Ethernet connections, as well as selecting colocation services at one of Internap's secure, fully-redundant data centers in Dallas, Texas.

Centerline needed a single network capable of effectively and cost-efficiently handing triple play traffic, particularly video applications. Before switching to Internap, Centerline experienced very costly, metered and choppy public ISDN circuits when employees used videoconferencing. On a typical day, video is used for up to six hours, so poor network performance impacts productivity.

"Jitter is the biggest problem in video, since you can't just throw more bandwidth at a network to solve the problem; nor can the sequence in which packets arrive be controlled on an ISDN line. Prior to the installation of our Internap circuit in our New York office, jitter got so bad during one call that we had to switch to audio only. The latency on the packets originating from that office was in the triple digits," said Steve Carnes, managing director and chief information officer of Centerline.

"With video, speed is much more important than the size of the bandwidth pipe. Internap is great because it provides the best route overall to keep real-time video packets moving at the fastest speed over the least latent network. With Internap's Private Network Access Point (P-NAP) distribution model, Internap ties in to up to eight Tier1 access providers, so if one provider's network is flooded, it automatically routes over a different network," Carnes continued. "We now have incredible performance for video conferencing, voice and sharing documents over all-Internap circuits."

Internap establishes a dynamic, burstable 100 Mbps VPN connection between either video conferencing equipment or webcams on PCs at each Centerline office location, without the necessity of routing the connection to Centerline's communications hub in Texas. Optimized connectivity allows Centerline to use a high volume of video conferencing without disruptions, as well as Web-based applications that allow internal communication and collaboration, while keeping its bandwidth costs under control.

"Choosing Internap as Centerline's primary network provider for all office-to-office communications is yet another testament to the clarity, speed and performance of our IP network," said Tim Sullivan, chief technology officer for Internap. "The cost savings of telephone, video or Web conferencing are only one side of the equation. The other is the incredible performance our network can deliver," he added.

According to the Yankee Group, an independent technology research firm, the market for online conferencing or Web-based meetings has grown at a 30% clip for the last few years, reaching $500 million a year.

About Centerline Capital Group

Centerline Capital Group, a subsidiary of Centerline Holding Company (NYSE:CHC), lends, invests and manages capital for the real estate industry. Centerline Capital Group is headquartered in New York, New York and has over 500 employees in nine offices throughout the United States. CharterMac acquired ARCap on August 15, 2006 and CharterMac and ARCap are now Centerline Capital Group. For more information, please visit www.centerline.com or contact the Investor Relations Department directly at 800-831-4826.

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 and content monetization services (CDN), 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 is a trademark of Internap Network Services Corporation and a wholly owned subsidiary, respectively. All other trademarks and brands are the property of their respective owners.

Internap Forward Looking Statements

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 progress of Internap's integration of the recently acquired VitalStream business and anticipated enhancements of the company's services, are forward-looking statements. 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. Many important factors that may affect Internap's results of operations and financial condition include, but are not limited to, our ability to successfully integrate the operations of Internap and VitalStream; our ability to compete against existing and future competitors; our ability to respond successfully to the evolution of the high performance Internet connectivity, content delivery, streaming and related services industries; our ability to respond successfully to technological change; the availability on favorable terms or at all of services from various Internet network and other third-parties on whom we rely to provide our services, and the failure of such third party suppliers to deliver their products and services; failures in our network operations centers, network access points or computer systems; our ability to complete successfully the integration of acquired companies, including VitalStream; our ability to protect ourselves and our customers from security breaches; our ability to protect our intellectual property; claims relating to intellectual property rights; government regulation of the Internet; and the effects of natural disasters or terrorist activity.

Our Annual Report on Form 10-K, 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. The forward-looking statements in this release speak only as of the date they are made. We undertake no obligation and expressly disclaim any obligation to revise or update publicly any forward-looking statement for any reason.