WASHINGTON, D.C. May 22, 2017 – Cogent Communications Holdings, Inc. (NASDAQ: CCOI), one of the largest Internet service providers in the world, today announced that Dave Schaeffer, Cogent’s Chief Executive Officer, will present at the following conferences:

The Stifel 2017 Technology, Internet & Media Conference is being held at The Fairmont Hotel in San Francisco, CA. Dave Schaeffer will be presenting on Monday, June 5th at 4:45 p.m. PT.

The Baird 2017 Global Consumer, Technology & Services Conference is being held at the InterContinental New York Barclay in New York, NY. Dave Schaeffer will be presenting on Tuesday, June 6th at 12:50 p.m. ET.

The Barclays High Yield Bond and Syndicated Loan Conference is being held at the Broadmoor in Colorado Springs, CO. Dave Schaeffer will be presenting on Friday, June 9th at 8:50 a.m. MT.

The William Blair 37th Annual Growth Stock Conference is being held at the Four Seasons Hotel in Chicago, IL. Dave Schaeffer will be presenting on Wednesday, June 14th at 8:40 a.m. CT.

Investors and other interested parties may access a live audio webcast of the conference presentations by going to the “Events” section of Cogent’s website at www.cogentco.com/events. Replays of the webcasts will be available for 90 days following the presentations.

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 more than 190 markets globally.

Since its inception, Cogent has unleashed the benefits of IP technology, building one of the largest and highest capacity IP networks in the world. 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 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent Communications can be reached in the United States at (202) 295-4200 or via email at Email住址會使用灌水程式保護機制。你需要啟動Javascript才能觀看它.

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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 Holdings, 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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