COI Cogent Comm Grp.

WASHINGTON, Feb. 28 /PRNewswire-FirstCall/ -- Cogent Communications Group, Inc. (AMEX:COI), the largest Ethernet Internet service provider in the United States, today announced that Dave Schaeffer, chief executive officer, will present at the Thomas Weisel Partners Internet & Telecom Conference 2006 on Wednesday, March 8 at the St. Regis Hotel in San Francisco. Mr. Schaeffer's presentation is scheduled for 11:30 a.m. PST. (Logo: http://www.newscom.com/cgi-bin/prnh/20020204/DCM032LOGO ) Investors and other interested parties may access a live audio webcast of the presentation by going to Cogent's Investor Relations section of our website to access the link to the audio webcast. A replay of the webcast will be available on Cogent's IR website for 30 days following the presentation. About Cogent Communications Cogent Communications (AMEX:COI) is a multinational, Tier 1 facilities- based ISP recently ranked by Ovum-RHK as the largest provider of Ethernet services in the United States. Cogent specializes in providing businesses with high-speed Internet access and point-to-point transport services. Cogent's facilities-based, all-optical IP network backbone spans 14 countries and provides IP services in over 95 markets located in North America and Europe. Since Cogent's inception, Cogent has unleashed the benefits of IP technology, building one of the largest and highest capacity IP networks in existence. This network enables Cogent to offer large bandwidth connections at highly competitive prices. Network ownership also enables Cogent to offer superior customer support through end-to-end control of service delivery and network monitoring. Cogent Communications is headquartered at 1015 31st Street, NW, Washington, D.C. 20007. For more information, visit http://www.cogentco.com/. Cogent Communications can be reached in the United States at (202) 295-4200 or via email at . First Call Analyst: http://www.newscom.com/cgi-bin/prnh/20020204/DCM032LOGO http://photoarchive.ap.org/ DATASOURCE: Cogent Communications Group, Inc. CONTACT: Cogent Contacts: For Public Relations: Jeff Henriksen, +1-202-295-4200, , or For Investor Relations: +1-202-295-4212, Web site: http://www.cogentco.com/

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