WASHINGTON, D.C. January 24, 2013 – Cogent Communications Group, Inc. (NASDAQ: CCOI) will host a conference call with financial analysts at 8:30 a.m. (ET) on February 21, 2013 to discuss Cogent's operating results for the fourth quarter and full year for 2012. Cogent will issue a press release announcing the operating results at 7 a.m. (ET) on February 21, 2013.

To participate, investors and other interested parties may access the earnings call as follows:

Dial-in Numbers: 1-888-401-4668 for U.S. callers or 1-719-325-2495 for international callers

Internet: An audio webcast is accessible under "Events" in the "News" section of Cogent's website at www.cogentco.com and will remain available through April 30, 2013.

Telephone Replay: Thursday, February 21, 2013 at 10:30 a.m. ET and continuing through 11:59 p.m. ET on Wednesday, February 27, 2013.

To listen to the replay, please dial 1-719-457-0820, Access code 3411415

About Cogent Communications

Cogent Communications (NASDAQ: CCOI) is a multinational, Tier 1 facilities-based ISP, consistently ranked as one of the top five networks in the world. Cogent specializes in providing businesses with high speed Internet access, point-to-point transport and colocation services. Cogent's facilities-based, all-optical IP network backbone provides IP services in over 180 markets globally.

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. Cogent also offers superior customer support by virtue of its 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 www.cogentco.com. Cogent Communications can be reached in the United States at (202) 295-4200 or via email at Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser..

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Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Group, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent's registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC.

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