Cogent Communications

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Cogent Communications Holdings, Inc.
Public
Traded asNASDAQCCOI
S&P 600 Component
IndustryTelecommunications
Founded1999
HeadquartersWashington, D.C., U.S.
Key people
Dave Schaeffer (CEO)/Founder/President
RevenueIncrease US$485.175 million (2017)[1]
Increase US$75.918 million (2017)[1]
Increase US$5.876 million (2017)[1]
Total assetsDecrease US$710.588 million (2017)[1]
Total equityDecrease US$62.857 million (2017)[1][2]
Number of employees
897[1] (February 1, 2017)
Websitewww.cogentco.com
Primary ASN174

Cogent Communications is a multinational internet service provider based in the United States. Cogent's primary services consist of Internet access and data transport, offered on a fiber optic, IP data-only network, along with colocation in data centers.[3]

Cogent's Autonomous System (AS) number, 174, which is its collection of connected Internet Protocol (IP) routing prefixes, has one of the highest-ranked connectivity degrees on the Internet.[4][5] This indicates a high level of connectivity with other network nodes.

Acquisition history[edit]

Cogent was founded in 1999 at the peak of the industry's growth and was funded by angel investors including members of Keiretsu Forum.[6] 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.[7]

Peering[edit]

Cogent has been controversial in the ISP market for low bandwidth pricing and its public disputes over peering with AOL (2003),[17] Level 3 Communications (2005),[18] France Telecom (2006),[19] Limelight Networks (2007),[20] TeliaSonera (March 2008),[21] and Sprint Nextel (October 2008).[22]

On March 14, 2008, after Cogent stopped routing packets from European network provider Telia (AS 1299), their two networks lost mutual connectivity.[21] The connection was reestablished March 28, 2008 with interconnection points in both the United States and Europe.[23]

On June 6, 2011, Cogent automatically stopped peering with The Department of Energy Sciences Network (ESnet) causing a disruption for 3 days.[24]

In November 2015, CenturyLink signed a new long-term bilateral interconnection agreement with Cogent Communications.[25]

Cogent has yet to agree on peering with the biggest IPv6 connectivity provider, Hurricane Electric. As of March 2016, direct connectivity between the two networks is impossible.[26] Cogent and Google have also stopped IPv6 peering in 2016.[27] This is rumored to be closely tied to Cogent leveraging Google's IPv4 traffic via a paid customer or to maintain Settlement-Free Interconnect with another network.[28]

In February 2017, Cogent blocked many piracy and streaming sites including The Pirate Bay.[29] This was unintentional due to a poorly crafted Spanish court order.[30]

References[edit]

  1. ^ a b c d e f "2017 Cogent Communications SEC Form 10-K". Securities and Exchange Commission. Retrieved 2019-01-08.
  2. ^ "2016 Cogent Communications SEC Form 10-K". Securities and Exchange Commission. Retrieved 2019-01-08.
  3. ^ "Cogent Communications, Form 10-Q, Quarterly Report, Filing Date Nov 7, 2012" (PDF). secdatabase.com. Retrieved Mar 27, 2013.
  4. ^ Visualizing Internet Topology at a Macroscopic Scale April 2005
  5. ^ AS ranking
  6. ^ a b "Cogent Communications, Form S-4, Filing Date Oct 16, 2001" (PDF). secdatabase.com. Retrieved Mar 27, 2013.
  7. ^ Lightwave – Cogent Communications banks on Ethernet over IP
  8. ^ "Cogent Communications, Form 425, Filing Date Aug 29, 2001" (PDF). secdatabase.com. Retrieved Mar 27, 2013.
  9. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Feb 5, 2002". secdatabase.com. Retrieved Mar 27, 2013.
  10. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Apr 4, 2002". secdatabase.com. Retrieved Mar 27, 2013.
  11. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Mar 3, 2003" (PDF). secdatabase.com. Retrieved Mar 27, 2013.
  12. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Jan 8, 2004". secdatabase.com. Retrieved Mar 27, 2013.
  13. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Mar 31, 2004" (PDF). secdatabase.com. Retrieved Mar 27, 2013.
  14. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Sep 17, 2004". secdatabase.com. Retrieved Mar 27, 2013.
  15. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Oct 29, 2004" (PDF). secdatabase.com. Retrieved Mar 27, 2013.
  16. ^ "Cogent Communications, Form 8-K, Current Report, Filing Date Dec 3, 2004". secdatabase.com. Retrieved Mar 27, 2013.
  17. ^ Noguchi, Yuki (2002-12-27). "'Peering' Dispute With AOL Slows Cogent Customer Access". Washington Post. Retrieved 2017-10-06.
  18. ^ Cogent Press release Level3 dispute Oct 7 2005
  19. ^ Kuri, Jürgen; Smith, Robert W. (2005-04-21). "France Telecom severs all network links to competitor Cogent". Heise online. Retrieved 2006-09-28.
  20. ^ Miller, Rich (30 September 2007). "Cogent De-peers Limelight Networks | Data Center Knowledge". Data Center Knowledge. Retrieved 15 August 2017.
  21. ^ a b The Telia-Cogent Spat Could Ruin the Web For Many, Om Malik, 2008-03-14
  22. ^ Sprint-Nextel Severs Its Internet Connection to Cogent Communications
  23. ^ Telia resolves internet dispute Archived 2008-06-07 at the Wayback Machine, http://thelocal.se, Peter Vinthagen Simpson, 2008-03-30
  24. ^ Important: Status regarding Cogent connectivity, Energy Sciences Network press release, Steve Cotter, Lawrence Berkeley National Lab
  25. ^ "CenturyLink, Cogent sign new interconnection agreement | FierceTelecom". www.fiercetelecom.com. Retrieved 2018-06-27.
  26. ^ E-mail from Hurricane Electric explaining why the two networks are severed on the nanog (North American Network Operators Group) mailing list
  27. ^ adminhacks.org, March 2016
  28. ^ Murenin, Constantine A. (2017-02-25). "Cogent & Google IPv6". Retrieved 2017-03-02.
  29. ^ "Internet Backbone Provider Cogent Blocks Pirate Bay and other "Pirate" Sites - TorrentFreak". TorrentFreak. 9 February 2017.
  30. ^ "A court order blocked pirate sites that weren't supposed to be blocked". Ars Technica. Retrieved 2017-03-02.

External links[edit]