Top organizations by IPv4 address space
Ranked by total IPv4 address space across each organization.
Leaderboard
Top organizations by IPv4 address space
Each organization links to its top ASNs.
| Rank | Organization | IPv4 addresses | ASN count | Top ASNs |
|---|---|---|---|---|
| 1 | United States Department of Defense (DoD) | 332 002 304 | 189 |
AS749: 224 165 632 | AS721: 72 221 440 | AS56: 7 759 360
|
| 2 | Amazon.com Inc. | 190 844 672 | 9 |
AS16509: 169 670 656 | AS14618: 21 143 808 | AS7224: 27 648
|
| 3 | China Telecom | 116 191 744 | 228 |
AS4134: 110 732 800 | AS140292: 1 129 216 | AS140061: 516 096
|
| 4 | Verizon Business | 101 547 264 | 72 |
AS701: 41 644 800 | AS22394: 30 306 048 | AS6167: 17 873 408
|
| 5 | AT&T Enterprises LLC | 100 153 600 | 36 |
AS7018: 92 879 360 | AS6389: 4 588 288 | AS14654: 916 480
|
| 6 | Comcast Cable Communications LLC | 68 830 464 | 46 |
AS7922: 68 222 208 | AS20214: 135 936 | AS21508: 71 424
|
| 7 | Microsoft Corporation | 67 587 584 | 18 |
AS8075: 65 689 344 | AS8070: 1 073 920 | AS3598: 533 504
|
| 8 | CHINA UNICOM China169 Backbone | 57 699 328 | 1 |
AS4837: 57 699 328
|
| 9 | Korea Telecom | 47 226 624 | 5 |
AS4766: 47 201 024 | AS45400: 25 344 | AS4040: 256
|
| 10 | China Mobile | 42 782 976 | 7 |
AS9808: 36 735 744 | AS24444: 2 049 792 | AS24445: 2 036 224
|
| 11 | Charter Communications Inc | 41 052 672 | 22 |
AS10796: 7 727 872 | AS20001: 7 197 696 | AS11427: 5 827 840
|
| 12 | SoftBank Corp. | 40 123 136 | 5 |
AS17676: 38 179 072 | AS4725: 1 930 752 | AS17505: 6 656
|
| 13 | Cogent/PSI | 35 871 232 | 1 |
AS174: 35 871 232
|
| 14 | Deutsche Telekom AG | 34 212 864 | 5 |
AS3320: 34 190 592 | AS2773: 14 080 | AS2792: 8 192
|
| 15 | Level 3 Communications | 29 404 160 | 1 |
AS3356: 29 404 160
|
| 16 | NTT DOCOMO BUSINESS Inc. | 28 639 744 | 7 |
AS4713: 28 623 872 | AS38639: 13 312 | AS18072: 1 280
|
| 17 | Google LLC | 24 916 736 | 12 |
AS396982: 19 928 576 | AS15169: 2 550 016 | AS19527: 1 823 744
|
| 18 | TELEFÔNICA BRASIL S.A | 22 970 368 | 9 |
AS26599: 11 693 056 | AS27699: 4 645 632 | AS18881: 4 616 192
|
| 19 | Telecom Italia S.p.A. | 22 859 520 | 8 |
AS3269: 20 795 904 | AS16232: 1 777 664 | AS20746: 217 088
|
| 20 | CenturyLink Communications LLC | 22 729 984 | 35 |
AS209: 19 855 360 | AS22561: 1 380 352 | AS2379: 683 264
|
| 21 | Orange S.A. | 20 626 688 | 19 |
AS3215: 20 046 848 | AS5511: 434 432 | AS2278: 98 560
|
| 22 | KDDI CORPORATION | 18 068 224 | 1 |
AS2516: 18 068 224
|
| 23 | SK Broadband Co Ltd | 17 595 648 | 23 |
AS9318: 15 288 832 | AS17849: 313 344 | AS9689: 291 840
|
| 24 | British Telecommunications PLC | 17 179 648 | 7 |
AS2856: 13 842 432 | AS6871: 2 097 664 | AS5400: 708 608
|
| 25 | China Education and Research Network Center | 17 174 528 | 1 |
AS4538: 17 174 528
|
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