is CAIDA's ranking of Autonomous Systems (AS) (which approximately map to Internet Service Providers) and organizations (Orgs) (which are a collection of one or more ASes). This ranking is derived from topological data collected by CAIDA's Archipelago Measurement Infrastructure and Border Gateway Protocol (BGP) routing data collected by the Route Views Project and RIPE NCC.
ASes and Orgs are ranked by their customer cone size, which is the number of their direct and indirect customers. Note: We do not have data to rank ASes (ISPs) by traffic, revenue, users, or any other non-topological metric.
ASN name or number search
1 2 3 4 .. 1690
AS Rank ▲ AS Number ∇ Organization cone size (ASes) ∇ 1 3356 Level 3 Parent, LLC 36692
2 1299 Telia Company AB 31935
3 174 Cogent Communications 26641
4 3257 GTT Communications Inc. 20980
5 2914 NTT America, Inc. 20536
6 6762 TELECOM ITALIA SPARKLE S.p.A. 17535
7 6939 Hurricane Electric LLC 16104
8 6453 TATA COMMUNICATIONS (AMERIC… 15061
9 3491 PCCW Global, Inc. 9753
10 6461 Zayo Bandwidth 9171
11 1273 Vodafone Group PLC 7000
12 3549 Level 3 Parent, LLC 6397
13 9002 RETN Limited 6369
14 5511 Orange S.A. 5169
15 4637 Telstra International Limited 4607
16 12956 Telefonica International Wholesale S… 4477
17 7473 Singapore Telecommunications (SIN… 4377
18 209 CenturyLink Communications, LLC 4257
19 12389 PJSC Rostelecom 3384
20 3320 Deutsche Telekom AG 3331
21 701 MCI Communications Services, Inc. … 3283
22 7018 AT&T Services, Inc. 3209
23 7922 Comcast Cable Communications, LLC 3055
24 20485 Closed Joint Stock Company TransT… 2962
25 3216 PJSC "Vimpelcom" 2757
26 16735 ALGAR TELECOM S/A 2392
27 9498 Bharti Airtel Limited 2337
28 31133 PJSC MegaFon 2335
2020/01/01 29 Support6830 for this work is providedLiberty by the Global U.S. Department B.V. of Homeland Security's Science and Technology Directorate ( 2216 Cybersecurity N66001-08-C-2029, SISTER HHSP 233201600012C ), the National Science Foundation Internet Laboratory for AS Rank IPv4 Empirical Network Science ( PANDA NSF OAC-1724853, iLENS CNS-0958547, Science Gateway NSF ACI--1547611), and Cisco's University Research Program. 30 20764 CJSC RASCOM 2071
31 2828 MCI Communications Services, Inc. … 2057
32 52320 GlobeNet Cabos Submarinos Colom… 2003
33 15412 Reliance Globalcom Limited 1980
34 1239 Sprint 1916
35 8359 MTS PJSC 1794
36 286 KPN B.V. 1687
37 43531 IX Reach Ltd 1643
38 58453 China Mobile International Limited 1602
39 10429 TELEFÔNICA BRASIL S.A 1567
40 262589 INTERNEXA BRASIL OPERADORA … 1468
1 2 3 4 .. 1690
Data Sources: Country 2019/12/20 | Netacuity (Digital Elements) 2019/12/20 | Organization 2020/01/01 | AS Relationships 2020/01/01 | AS Assigned 2020/01/01
2020/01/01 Support for this work is provided by the U.S. Department of Homeland Security's Science and Technology Directorate ( Cybersecurity N66001-08-C-2029, SISTER HHSP 233201600012C ), the National Science Foundation Internet Laboratory for AS Rank IPv4 Empirical Network Science ( PANDA NSF OAC-1724853, iLENS CNS-0958547, Science Gateway NSF ACI--1547611), and Cisco's University Research Program.