COGENT COMMUNICATIONS TO HOST FIRST QUARTER 2008 EARNINGS CALL ON MAY 9, 2008

Cogent Communications Group, Inc. (NASDAQ: CCOI) will host a conference call with financial analysts at 8:30 a.m. (ET) on May 9, 2008 to discuss Cogent’s operating results for the first quarter of 2008. Cogent will issue a press release announcing the operating results at 7 a.m. (ET) on May 9, 2008.

Investors and other interested parties may access the live earnings call as follows:

Dial-in Number: 1-877-548-7912 for U.S. callers or 1-719-325-4901 for international callers.

Investors and other interested parties may access the webcast by clicking here.

Telephone Replay: Friday, May 9, 2008 at 11:30 a.m. ET and continuing through 11:59 p.m. ET on Friday, May 16. To listen to the replay, please dial 1-719-457-0820, Access code 9861134




COGENT COMMUNICATIONS HOSTED FISCAL YEAR 2007 EARNINGS CALL ON FEBRUARY 27, 2008

Cogent Communications Group, Inc. (NASDAQ: CCOI) hosted a conference call with financial analysts at 8:30 a.m. (ET) on February 27, 2008 to discuss Cogent’s operating results for the fourth quarter and full year for 2007. Cogent issued a press release announcing the operating results at 7 a.m. (ET) on February 27, 2008.

Investors and other interested parties may access the archived earnings call as follows:

Dial-in Number: 1-877-397-0300 for U.S. callers or 1-719-325-4905 for international callers.

Investors and other interested parties may access the archived webcast by clicking here.

Telephone Replay: Wednesday, February 27, 2008 at 11:30 a.m. ET and continuing through 11:59 p.m. ET on Friday, February 29. To listen to the replay, please dial 1-719-457-0820, Access code 2432032.




Annual Meeting 2008


The annual meeting of the stockholders of Cogent Communications Group, Inc. will be heldat 9:00 a.m. on Thursday, April 17th, 2008 at the company's headquarters in Washington, DC. If you plan to attend in person please contact Ried Zulager at 202-295-4274.