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CAIDA: Cooperative Association for Internet Data Analysis
AS ranking

-----summary of contents-----
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.
-----end summary of contents-----

Cooperative Association for Internet Data Analysis (CAIDA)
CAIDA AS ranking
ranking mode:   relationship based     
dataset:  
sort ASes by:   sorted from left to right.
ASes to display:  
aggregate ASes:  
(details)
custom grouping:
space-delimited ASes per group; one group per line

(must be in same format as above)
format:  
rank AS
number
AS information customer cone degree
ISP's namecountry/24sprefixesASes
11239SprintUS7,392,937273,68729,0421,504
23549 GBLX Global Crossing Ltd.US6,958,931269,99228,4751,283
34323tw telecom holdings, inc.US6,910,048266,83828,1561,240
41299 TELIANET TeliaNet Global NetworkEU6,768,161258,49526,997565
56939Hurricane Electric, Inc.US6,716,109257,54226,9311,169
69002 RETN-AS ReTN.net Autonomous SystemGB6,710,010256,70226,836915
73356 LEVEL3 Level 3 CommunicationsUS6,703,783256,46126,7712,417
8174 COGENT Cogent/PSIUS6,585,992246,38226,5232,297
9701MCI Communications Services, Inc. d/b/a Verizon BusinessUS6,571,870247,90626,5072,187
102828XO CommunicationsUS6,432,644239,71625,360781
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/
Last updated:
Maintained by:Brad Huffaker