|   HOME   |   RESEARCH   |   DATA   |   TOOLS   |   PUBLICATIONS   |   WORKSHOPS   |   PROJECTS   |   FUNDING   |
		http://as-rank.caida.org > : home     visit     contact     search:
		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:   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 7018 AT&T WorldNet Services US 6,774,087 235,726 26,158 2,077 2 3356 Level 3 Communications, LLC US 6,419,393 227,381 24,737 1,823 3 1239 Sprint US 5,598,724 210,764 22,507 1,663 4 174 Cogent Communications US 5,401,814 201,558 21,764 1,703 5 3549 Global Crossing US 5,383,452 205,093 21,903 1,063 6 3561 Savvis US 5,346,719 198,442 21,144 493 7 2914 NTT America, Inc. US 5,292,545 195,072 20,713 564 8 4323 Time Warner Telecom US 5,155,364 190,829 20,289 1,005 9 701 UUNET Technologies, Inc. US 4,996,862 192,249 20,367 2,571 10 702 MCI EMEA NL 4,918,448 183,876 19,658 520 ranking mode: relationship based, pruning customer cone with inferred p2p links alpha parameter: 0.00938 Whois: Feb 23, 2006 - AFRINIC, APNIC, ARIN, LACNIC, and RIPE AS links: BGP RIBs from RouteViews (rv2) AS links: 5 days starting on Apr 28, 2008 (15 snapshots at 8 hour intervals) prefix-to-AS mappings: RouteViews BGP snapshot on Mar 26, 2008 Support for this work was provided by the Cisco University Research program and by NSF CNS-0434996, with previous support from DHS/NCS.
	Cooperative Association for Internet Data Analysis (CAIDA)

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