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		AS ranking This CGI script presents CAIDA's ranking of Autonomous Systems (AS). We provide two ranking methods: degree-based and AS-relationship-based. In degree mode, ASes are ranked by their degrees in the skitter-derived AS topology graph (skitter is a traceroute-based topology measurement tool). In AS-relationship mode, ASes are ranked by their customer cone sizes defined by AS relationships inferred from RouteViews BGP table dumps. |   Introduction    AS Relationships Data and Papers    AS Ranking Help   | Cooperative Association for Internet Data Analysis (CAIDA) AS ranking ranking mode:   relationship based      dataset:   May 20, 2009; alpha 0.01 May 10, 2009; alpha 0.00792 Apr 29, 2009; alpha 0.01 Apr 10, 2009; alpha 0.00869 Mar 25, 2009; alpha 0.0004 Mar 11, 2009; alpha 0.0004 Feb 20, 2009; alpha 0.00938 Feb 1, 2009; alpha 0.00938 Jan 22, 2009; alpha 0.0004 Jan 5, 2009; alpha 0.0004 Dec 22, 2008; alpha 0.0004 Dec 1, 2008; alpha 0.0004 Nov 10, 2008; alpha 0.0004 Oct 20, 2008; alpha 0.0004 Sep 10, 2008; alpha 0.0004 Sep 1, 2008; alpha 0.00707 Aug 25, 2008; alpha 0.00792 Aug 18, 2008; alpha 0.00792 Aug 11, 2008; alpha 0.01 Aug 4, 2008; alpha 0.01 Jul 28, 2008; alpha 0.00869 Jul 21, 2008; alpha 0.00869 Jul 14, 2008; alpha 0.01 Jul 7, 2008; alpha 0.00869 Jun 30, 2008; alpha 0.00938 Jun 23, 2008; alpha 0.00869 Jun 16, 2008; alpha 0.01 Jun 9, 2008; alpha 0.00792 Jun 2, 2008; alpha 0.01 May 26, 2008; alpha 0.00869 May 19, 2008; alpha 0.01 May 12, 2008; alpha 0.00707 May 5, 2008; alpha 0.01 Apr 28, 2008; alpha 0.00938 Apr 21, 2008; alpha 0.00938 Apr 14, 2008; alpha 0.01 Apr 7, 2008; alpha 0.00938 Mar 31, 2008; alpha 0.01 Mar 24, 2008; alpha 0.00792 Mar 17, 2008; alpha 0.0004 Mar 10, 2008; alpha 0.01 Mar 3, 2008; alpha 0.00869 Feb 25, 2008; alpha 0.0004 Feb 18, 2008; alpha 0.01 Feb 11, 2008; alpha 0.01 Feb 4, 2008; alpha 0.01 Jan 28, 2008; alpha 0.01 Jan 21, 2008; alpha 0.01 Jan 14, 2008; alpha 0.01 Jan 7, 2008; alpha 0.0004 Dec 31, 2007; alpha 0.00938 Dec 24, 2007; alpha 0.01 Dec 17, 2007; alpha 0.01 Dec 10, 2007; alpha 0.01 Dec 3, 2007; alpha 0.01 Nov 26, 2007; alpha 0.01 Nov 19, 2007; alpha 0.01 Nov 12, 2007; alpha 0.01 Nov 5, 2007; alpha 0.01 Oct 29, 2007; alpha 0.01 Oct 22, 2007; alpha 0.00869 Oct 15, 2007; alpha 0.01 Oct 8, 2007; alpha 0.01 Oct 1, 2007; alpha 0.01 Sep 24, 2007; alpha 0.01 Sep 17, 2007; alpha 0.01 Sep 10, 2007; alpha 0.01 Sep 3, 2007; alpha 0.00938 Aug 27, 2007; alpha 0.01 Aug 20, 2007; alpha 0.01 Aug 13, 2007; alpha 0.01 Aug 6, 2007; alpha 0.00938 Jul 30, 2007; alpha 0.01 Jul 23, 2007; alpha 0.01 Jul 16, 2007; alpha 0.01 Jul 9, 2007; alpha 0.01 Jul 2, 2007; alpha 0.00938 Jun 25, 2007; alpha 0.01 Jun 18, 2007; alpha 0.01 Jun 11, 2007; alpha 0.01 Jun 4, 2007; alpha 0.01 May 28, 2007; alpha 0.01 May 21, 2007; alpha 0.01 May 14, 2007; alpha 0.01 May 7, 2007; alpha 0.01 Apr 30, 2007; alpha 0.01 Apr 23, 2007; alpha 0.01 Apr 16, 2007; alpha 0.01 Apr 9, 2007; alpha 0.01 Apr 2, 2007; alpha 0.01 Mar 26, 2007; alpha 0.01 Mar 19, 2007; alpha 0.01 Mar 12, 2007; alpha 0.01 Mar 5, 2007; alpha 0.01 Feb 26, 2007; alpha 0.01 Feb 19, 2007; alpha 0.00938 Feb 12, 2007; alpha 0.01 Feb 5, 2007; alpha 0.00869 Jan 29, 2007; alpha 0.01 Jan 22, 2007; alpha 0.01 Jan 15, 2007; alpha 0.01 Jan 8, 2007; alpha 0.00938 Jan 1, 2007; alpha 0.01 Dec 25, 2006; alpha 0.00938 Dec 18, 2006; alpha 0.01 Dec 11, 2006; alpha 0.01 Dec 4, 2006; alpha 0.01 Nov 27, 2006; alpha 0.00792 Nov 20, 2006; alpha 0.00869 Nov 13, 2006; alpha 0.01 Nov 6, 2006; alpha 0.01 Oct 30, 2006; alpha 0.01 Oct 23, 2006; alpha 0.00792 Oct 16, 2006; alpha 0.01 Oct 9, 2006; alpha 0.01 Oct 2, 2006; alpha 0.01 Sep 25, 2006; alpha 0.01 Sep 18, 2006; alpha 0.01 Sep 11, 2006; alpha 0.01 Sep 4, 2006; alpha 0.00938 Aug 28, 2006; alpha 0.01 Aug 21, 2006; alpha 0.00938 Aug 14, 2006; alpha 0.01 Aug 7, 2006; alpha 0.01 Jul 31, 2006; alpha 0.01 Jul 24, 2006; alpha 0.01 Jul 17, 2006; alpha 0.01 Jul 10, 2006; alpha 0.00366 Jul 3, 2006; alpha 0.01 Jun 26, 2006; alpha 0.01 Jun 19, 2006; alpha 0.01 Jun 12, 2006; alpha 0.01 Jun 5, 2006; alpha 0.01 May 29, 2006; alpha 0.00938 May 22, 2006; alpha 0.01 May 15, 2006; alpha 0.01 May 8, 2006; alpha 0.01 May 1, 2006; alpha 0.01 Apr 24, 2006; alpha 0.01 Apr 17, 2006; alpha 0.01 Apr 10, 2006; alpha 0.01 Apr 3, 2006; alpha 0.01 Mar 27, 2006; alpha 0.01 Mar 20, 2006; alpha 0.01 Mar 13, 2006; alpha 0.01 Mar 6, 2006; alpha 0.01 Feb 27, 2006; alpha 0.01 Feb 20, 2006; alpha 0.01 Feb 13, 2006; alpha 0.01 Feb 6, 2006; alpha 0.01 Jan 30, 2006; alpha 0.01 Jan 23, 2006; alpha 0.01 Jan 16, 2006; alpha 0.01 Jan 9, 2006; alpha 0.01 Jan 2, 2006; alpha 0.01 Dec 5, 2005; alpha 0.01 Nov 7, 2005; alpha 0.01 Oct 3, 2005; alpha 0.01 Sep 5, 2005; alpha 0.01 Aug 1, 2005; alpha 0.01 Jul 4, 2005; alpha 0.01 Jun 6, 2005; alpha 0.01 May 2, 2005; alpha 0.01 Apr 4, 2005; alpha 0.01 Mar 7, 2005; alpha 0.00707 Feb 7, 2005; alpha 0.01 Jan 3, 2005; alpha 0.01 Dec 6, 2004; alpha 0.00366 Nov 1, 2004; alpha 0.01 Oct 4, 2004; alpha 0.01 Sep 6, 2004; alpha 0.01 Aug 2, 2004; alpha 0.01 Jul 5, 2004; alpha 0.01 Jun 7, 2004; alpha 0.01 May 3, 2004; alpha 0.01 Apr 5, 2004; alpha 0.01 Mar 1, 2004; alpha 0.01 Feb 2, 2004; alpha 0.01 Jan 5, 2004; alpha 0.01 prune customer cone using inferred peer-to-peer links sort ASes by:   /24s prefixes ASes degree /24s prefixes ASes degree /24s prefixes ASes degree /24s prefixes ASes degree sorted from left to right. ASes to display:   ASes ranking in the top all available ASes aggregate ASes:   none, treat each AS individually whois grouping: (details) custom grouping: text: space-delimited ASes per group; one group per line file: (must be in same format as above) format:   HTML table ASCII tab-delimited table rank AS number AS information customer cone degree ISP's name country /24s prefixes ASes 1 1239 Sprint US 7,392,937 273,687 29,042 1,504 2 3549 GBLX Global Crossing Ltd. US 6,958,931 269,992 28,475 1,283 3 4323 tw telecom holdings, inc. US 6,910,048 266,838 28,156 1,240 4 1299 TELIANET TeliaNet Global Network EU 6,768,161 258,495 26,997 565 5 6939 Hurricane Electric, Inc. US 6,716,109 257,542 26,931 1,169 6 9002 RETN-AS ReTN.net Autonomous System GB 6,710,010 256,702 26,836 915 7 3356 LEVEL3 Level 3 Communications US 6,703,783 256,461 26,771 2,417 8 174 COGENT Cogent/PSI US 6,585,992 246,382 26,523 2,297 9 701 MCI Communications Services, Inc. d/b/a Verizon Business US 6,571,870 247,906 26,507 2,187 10 2828 XO Communications US 6,432,644 239,716 25,360 781 ranking mode: relationship based, pruning customer cone with inferred p2p links alpha parameter: 0.01000 Whois:Nov 19, 2008 - APNIC, ARIN, LACNIC, AFRNIC, and RIPE AS links: BGP ribs from bgp_site (rrc12) AS links: 5 days starting on May 20, 2009 (1 snapshots at 8 hour intervals) prefix-to-AS mappings: RouteViews BGP snapshot on Apr 8, 2007 Support for this work was provided by the Cisco University Research program and by NSF CNS-0434996, with current support from DHS.
	Cooperative Association for Internet Data Analysis (CAIDA)

Page URL: http://as-rank.caida.org/
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Maintained by:Brad Huffaker