Cogent Communications Holdings, Inc. (NASDAQ: CCOI) today announced that Cogent Communications Group, Inc., a wholly owned subsidiary of Cogent Communications, intends to commence a tack-on offering of an additional $70 million aggregate principal amount of its 5.375% Senior Secured Notes due 2022 to be offered and sold only to persons reasonably believed to be qualified institutional buyers in an unregistered offering pursuant to Rule 144A under the Securities Act of 1933, as amended. The Notes will be guaranteed by Cogent's domestic subsidiaries, subject to certain exceptions, and by Cogent Communications. Cogent Communications' guarantee will be unsecured and Cogent Communications will not be subject to the covenants under the indenture governing the Notes. If the offering is consummated, Cogent expects to use the proceeds from the offering for general corporate purposes and/or to repurchase Cogent Communications' common stock or to pay special or recurring dividends to Cogent Communications' stockholders. There can be no assurance that the issuance and sale of the Notes will be consummated.

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 Communications' facilities-based, all-optical IP network provides services in over 195 markets globally.