WASHINGTON, D.C., October 1, 2002 - Cogent Communications Group, Inc. (AMEX: COI), a Tier One, next generation, optical Internet service provider, announced today that they have upgraded the PSINet data centers with Cogent connectivity and effective immediately, will begin to promote the three data centers acquired through the purchase of PSINet assets. The locations of the data centers are Los Angeles, New York City and Herndon, Virginia.

Each data center (or colocation facility) will provide rack space and connectivity to Cogent's dedicated, all optical Internet transit service. Connections will be available at $30 per megabit for 100 and 1,000 Mbps speeds.

"We are taking a very unique approach to colocation by enabling prospects who operate outside of Cogent's footprint to get access to the largest capacity, lowest priced data network in the country," said Dave Schaeffer, CEO Cogent Communications. "By combining one of the highest quality networks in the country with a highly secure and reliable data center, Cogent is once again providing a value to the customer that will be nearly impossible for other providers to match."

Cogent is launching a promotion of free rack space when customers, enterprises and service providers, purchase a 100 or 1,000 Mbps connection at any of the three colocation facilities. Included with the rack space are one fast Ethernet port, 2 20-amp circuits, uninterruptible power, secure facilities and full environmental controls.

About Cogent Communications

Cogent Communications (AMEX: COI) is a Tier 1, facilities based, all-optical ISP focused on delivering ultra-high speed Internet access and transport services to businesses in the multi-tenant marketplace and to service providers located in major metropolitan areas across the United States. Cogent's signature service offered to commercial end-users of 100 Mbps for $1,000 per month, offers 100 times the observed bandwidth of a T-1 connection at approximately two-thirds of the cost. The Cogent solution makes ultra-high speed Internet access an affordable reality for small and medium-sized businesses, as well as large enterprises and service providers. Cogent's facilities-based, all-optical end-to-end IP network enables non-oversubscribed 100 Mbps and 1000 Mbps connectivity for radically low, unmetered pricing levels. Cogent's network consists of a dedicated nationwide multiple OC-192 fiber backbone, multiple intra-city OC-48 fiber rings, and optically-interfaced high-speed routers. Cogent has been recognized as the first IP Optical Cisco Powered Network (CPN). Cogent acquired the U.S. operations of PSINet and is now servicing 33 metropolitan markets with services ranging from T1 and T3, to 100 Mbps and 1,000 Mbps Internet connectivity and transport services. Cogent Communications is headquartered at 1015 31st Street, NW, Washington, D.C. 20007. For more information, visit www.cogentco.com. Cogent Communications can be reached at (202) 295-4200 or via email at Email住址會使用灌水程式保護機制。你需要啟動Javascript才能觀看它.

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This news release contains forward-looking statements that involve risks and uncertainties. Factors that could cause or contribute to such risks and uncertainties include, but are not limited to, successful completion or expansion of the network, our connection to the Internet requires us to obtain and maintain relationships with other providers, our rights to the use of the dark fiber that make up our network may be affected by the financial health of our fiber providers, we often are limited in choices for metropolitan fiber suppliers and we will need to obtain or construct additional building laterals to connect buildings to our network. Additional general factors include competition, changes in technology and methods of marketing, and various other factors beyond the Company's control.

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