- Cogent Communications
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Cogent Communications Group, Inc. 
Type Public Traded as NASDAQ: CCOI Industry Telecommunications Founded 1999 Headquarters Washington, D.C., USA Key people Dave Schaeffer Founder/President/CEO Revenue $263.4 million USD (2010) Operating income $5.9 million USD (2010) Net income $2.6 million USD (2010) Employees 582 (April, 2010) Website www.cogentco.com Primary ASN: 174 Cogent Communications is a multinational internet service provider whose network spans more than 53,300 intercity fiber route miles and 15,800 metro fiber miles. Cogent provides service in over 165 markets across 31 countries in North America and Europe. Cogent carries approximately 37 petabytes per day of Internet traffic and connects to approximately 3,600 networks.
Cogent's AS (174) has one of the highest-ranked connectivity degrees on the Internet.[1][2]
Contents
Acquisition history
Cogent was founded in 1999 at the peak of the industry's growth. In three years, Cogent acquired 13 other failing carriers, purchasing $14 billion in capital for $60 million, including $4 billion worth of Property, Plant and Equipment.[3]
September 2001 - Acquires the assets of NetRail
February 2002 - Acquires Allied Riser
April 2002 - Acquires Building Access Agreements from OnSite Access
April 2002 - Acquires Major US Assets of PSINet
September 2002 - Acquires Major Assets of FiberCity Networks
February 2003 - Acquires Fiber Network Solutions
May 2003 - Acquires Assets of Applied Theory
January 2004 - Acquires LambdaNet France & Spain
March 2004 - Acquires Fiber Network and Equipment in Germany Out of Former Carrier1 Assets
September 2004 - Acquires Global Access
October 2004 - Acquires Aleron Broadband
December 2004 - Acquires NTT/Verio Dedicated Access Business in U.S.Peering
Cogent has been controversial in the ISP market for low bandwidth pricing and its public disputes over peering with AOL (2003)[4], France Telecom (2006)[5], Level 3 Communications (2005)[6], TeliaSonera (March 2008)[7] and Sprint Nextel (October 2008)[8]. Sprint has stated that no peering agreement existed with Cogent, and that they were severing connections from a failed settlement-free peering trial the previous year. Cogent was notified of the impending disconnections and Sprint has temporarily reinstated the connection to give Cogent additional time to arrange for peering.[9][10]
On March 14, 2008, after Cogent stopped routing packets from European network provider Telia (AS 1299), their two networks lost mutual connectivity.[7] The connection was reestablished March 28, 2008 with interconnection points in both the United States and Europe.[11]
On June 6, 2011, Cogent automatically stopped peering with The Department of Energy Sciences Network (ESnet)[12] causing a disruption for 3 days.
Cogent has yet to agree on peering with one of the biggest IPv6 connectivity providers, Hurricane Electric. As of 2011 April, direct connectivity between the two networks is impossible.[13]
References
- ^ Visualizing Internet Topology at a Macroscopic Scale April 2005
- ^ AS ranking
- ^ Lightwave - Cogent Communications banks on Ethernet over IP
- ^ Noguchi, Yuki (2002-12-27). "'Peering' Dispute With AOL Slows Cogent Customer Access". Washington Post. http://legalminds.lp.findlaw.com/list/cyberia-l/msg42080.html. Retrieved 2006-09-28.
- ^ Kuri, Jürgen; Smith, Robert W. (2005-04-21). "France Telecom severs all network links to competitor Cogent". Heise online. http://morse.colorado.edu/~epperson/courses/routing-protocols/handouts/cogent-ft.html. Retrieved 2006-09-28.
- ^ Cogent Press release Level3 dispute Oct 7 2005
- ^ a b The Telia-Cogent Spat Could Ruin the Web For Many, Om Malik, 2008-03-14
- ^ Sprint-Nextel Severs Its Internet Connection to Cogent Communications
- ^ https://www.sprint.net/cogent.php
- ^ Cogent Co
- ^ Telia resolves internet dispute, http://thelocal.se, Peter Vinthagen Simpson, 2008-03-30
- ^ Important: Status regarding Cogent connectivity, Energy Sciences Network press release, Steve Cotter, Lawrence Berkeley National Lab
- ^ E-mail from Hurricane Electric explaining why the two networks are severed on the nanog (North American Network Operators Group) mailing list
External links
Categories:- Companies listed on NASDAQ
- Internet service providers of the United States
- Companies based in Washington, D.C.
- Transit-free networks
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