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Top ASNs by IPv4 address space

Autonomous systems

Top ASNs by IPv4 address space

Top ASN Ranked by total announced IPv4 address space. Related ASNs are grouped by organization.

Leaderboard

Top ASNs by IPv4 addresses

Each entry links to the ASN detail page and related ASNs.

Rank ASN Organization IPv4 addresses Related ASNs
1 AS749 United States Department of Defense (DoD) 224 166 912
2 AS16509 Amazon.com Inc. 168 578 816
3 AS4134 China Telecom 110 732 800
4 AS7018 AT&T Enterprises LLC 92 883 712
5 AS721 United States Department of Defense (DoD) 72 229 632
6 AS7922 Comcast Cable Communications LLC 68 058 624
7 AS8075 Microsoft Corporation 65 679 616
8 AS4837 CHINA UNICOM China169 Backbone 57 712 896 N/A
9 AS4766 Korea Telecom 47 192 320
10 AS701 Verizon Business 41 417 728
11 AS17676 SoftBank Corp. 38 060 288
12 AS9808 China Mobile 37 424 384
13 AS174 Cogent Communications LLC 35 919 872
14 AS3320 Deutsche Telekom AG 34 206 720
15 AS22394 Verizon Business 30 306 048
16 AS3356 Level 3 Parent LLC 29 472 256
17 AS4713 NTT DOCOMO BUSINESS Inc. 28 624 896
18 AS3269 Telecom Italia S.p.A. 20 795 904
19 AS3215 Orange S.A. 20 070 400
20 AS396982 Google LLC 19 891 200
21 AS209 CenturyLink Communications LLC 19 864 576
22 AS14618 Amazon.com Inc. 19 455 744
23 AS2516 KDDI CORPORATION 18 034 944 N/A
24 AS714 Apple Inc. 17 990 144
25 AS6167 Verizon Business 17 377 792

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