WASHINGTON, D.C. February 10, 2015 – Today, Cogent Communications Holdings, Inc. ("Cogent Communications") announced that Cogent Communications Group, Inc. ("Cogent"), a wholly owned subsidiary of Cogent Communications, has priced its offering of $250 million of 5.375% Senior Secured Notes due 2022 (the "Notes") for issuance at par. The amount offered represents an increase of $5 million from the amount previously announced. The Notes are being offered and sold only to qualified institutional buyers in an unregistered offering pursuant to Rule 144A under the Securities Act of 1933, as amended (the "Act"), and to certain non-U.S. persons in transactions outside the United States in reliance on Regulation S under the Act. The offering is expected to close on February 20, 2015, subject to customary closing conditions.

Following the pricing of the offering of the Notes, Cogent issued a notice of conditional full redemption (the "Notice") with respect to its 8.375% Senior Secured Notes due 2018 (the "Existing Secured Notes"). Pursuant to the Notice, Cogent gave holders of the Existing Secured Notes notice that, subject to the conditions precedent stated therein, it will redeem (the "Redemption") all of the outstanding Existing Secured Notes on March 12, 2015 (the "Redemption Date"). The Existing Secured Notes, which have an outstanding principal balance of $240.0 million, will be redeemed in full at a redemption price equal to 104.188% of the outstanding principal amount plus accrued and unpaid interest thereon, if any, to but not including the Redemption Date.

As permitted by the terms of the Existing Secured Notes, the Notice and the Redemption are conditioned upon the consummation (as and when determined by Cogent in its sole and absolute discretion) of the offering of the Notes. Cogent expects to use the proceeds from the offering, plus cash on hand, to finance the redemption of the Existing Secured Notes.

The information in this release does not constitute an offer to sell or a solicitation of an offer to buy any of the Notes. The Notes offering is not being made to any person in any jurisdiction in which the offer, solicitation or sale is unlawful. The Notes offered have not been registered under the Act, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.

About Cogent Communications

Cogent Communications (NASDAQ: CCOI) is a multinational, Tier 1 facilities-based ISP, consistently ranked as one of the top five Internet backbone networks in the world. Cogent specializes in providing businesses with high speed Internet access, Ethernet transport and colocation services. Cogent's facilities-based, all-optical IP network provides services in 190 markets globally.

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 Esta dirección de correo electrónico está siendo protegida contra los robots de spam. Necesita tener JavaScript habilitado para poder verlo..

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Except for historical information and discussion contained herein, statements contained in this release constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to statements identified by words such as "believes," "expects," "anticipates," "estimates," "intends," "plans," "targets," "projects" and similar expressions. The statements in this release are based upon the current beliefs and expectations of Cogent's management and are subject to significant risks and uncertainties. Actual results may differ from those set forth in the forward-looking statements. Numerous factors could cause or contribute to such differences, including future economic instability in the global economy or a contraction of the capital markets which could affect spending on Internet services and our ability to engage in financing activities; the impact of changing foreign exchange rates (in particular the Euro to USD and Canadian dollar to USD exchange rates) on the translation of our non-USD denominated revenues, expenses, assets and liabilities; legal and operational difficulties in new markets; the imposition of a requirement that we contribute to the U.S. Universal Service Fund and similar funds in other countries; changes in government policy and/or regulation, including net neutrality rules by the United States Federal Communications Commission and in the area of data protection; increasing competition leading to lower prices for our services; our ability to attract new customers and to increase and maintain the volume of traffic on our network; the ability to maintain our Internet peering arrangements on favorable terms; our reliance on an equipment vendor, Cisco Systems Inc., and the potential for hardware or software problems associated with such equipment; the dependence of our network on the quality and dependability of third-party fiber providers; our ability to retain certain customers that comprise a significant portion of our revenue base; the management of network failures and/or disruptions; and outcomes in litigation as well as other risks discussed from time to time in our filings with the Securities and Exchange Commission, including, without limitation, our annual report on Form 10-K for the fiscal year ended December 31, 2013 and our quarterly report on Form 10-Q for the quarter ended September 30, 2014 filed with the Securities and Exchange Commission. Cogent undertakes no duty to update any forward-looking statement or any information contained in this press release or in other public disclosures at any time.

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