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Cumulative IPv4, IPv6, and ASN allocations to United States over time.
Share of announced address space covered by valid Route Origin Authorizations.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 131.1K |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.2M | 554.2M | 345 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 9.2M | 1,107 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 1.7M | 3,573 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 267.7K | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 19.2M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 3.8M | 4,508 |
| AS3356US | LEVEL3 - Level 3 Parent, LLC | 34.6M | 1.3M | 2,127 |
| AS22394US | CELLCO - Verizon Business | 31M | 2.8M | 290 |
| AS209US | CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC | 26.2M | 17.1M | 1,652 |
| AS22773US | ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc. | 23.5M | 6.4M | 6,234 |
| AS14618US | AMAZON-AES - Amazon.com, Inc. | 21.8M | 255K | 1,860 |
| AS6167US | CELLCO-PART - Verizon Business | 17.9M | 16.7K | 3,804 |
| AS21928US | T-MOBILE-AS21928 - T-Mobile USA, Inc. | 14M | 1.2M | 538 |
| AS20115US | CHARTER-20115 - Charter Communications LLC | 13.6M | 7.9M | 4,565 |
| AS7377US | UCSD - University of California, San Diego | 12.9M | 81.9K | 20 |
| AS7029US | WINDSTREAM - Windstream Communications LLC | 12.4M | 35.6M | 3,002 |
| AS5650US | FRONTIER-FRTR - Frontier Communications of America, Inc. | 12.2M | 1.1M | 905 |
| AS10796US | TWC-10796-MIDWEST - Charter Communications Inc | 9.9M | 1.4M | 666 |
| AS4249US | LILLY-AS - Eli Lilly and Company | 9.2M | — | 280 |
| AS3257US | GTT-BACKBONE GTT Communications Inc. | 9.1M | 6M | 1,420 |
| AS56US | DNIC-AS-00056 - United States Department of Defense (DoD) | 8.1M | — | 912 |
| AS20001US | TWC-20001-PACWEST - Charter Communications Inc | 7.9M | 1.6M | 608 |
| AS3561US | CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC | 7.4M | 9.1 | 646 |
| AS6128US | CABLE-NET-1 - Cablevision Systems Corp. | 7.2M | 2.4M | 89 |
| AS20057US | ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC | 7.2M | 60.1K | 1,623 |
| AS19108US | SUDDENLINK-COMMUNICATIONS - Optimum | 7M | 114.8K | 438 |
| AS2828US | XO-AS15 - Verizon Business | 6.7M | 65.5K | 86 |
| AS33363US | BHN-33363 - Charter Communications, Inc | 6.3M | 1.4M | 496 |
| AS2914US | NTT-DATA-2914 - NTT America, Inc. | 6.3M | 460.8K | 1,237 |
| AS11427US | TWC-11427-TEXAS - Charter Communications Inc | 5.9M | 3.5M | 421 |
| AS702US | UUNET - Verizon Business | 5.9M | 10M | 467 |
| AS3549US | LVLT-3549 - Level 3 Parent, LLC | 5.4M | 999.5K | 855 |
| AS31898US | ORACLE-BMC-31898 - Oracle Corporation | 5.3M | 869.6K | 3,170 |
| AS6079US | RCN-AS - RCN | 5.2M | 19.7M | 2,270 |
| AS1540US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | 4.8M | 23 | 685 |
| AS367US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 4.8M | 299 | 1,514 |
| AS11426US | TWC-11426-CAROLINAS - Charter Communications Inc | 4.7M | 1.3M | 220 |
| AS306US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 4.7M | 1.8K | 335 |
| AS16625US | AKAMAI-AS - Akamai Technologies, Inc. | 4.6M | 98.3K | 2,315 |
| AS6389US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | 4.6M | — | 55 |
| AS11351US | TWC-11351-NORTHEAST - Charter Communications Inc | 4.3M | 1.2M | 139 |
| AS11003US | PANDG - The Procter and Gamble Company | 4.1M | — | 39 |
| AS36351US | SOFTLAYER - IBM Cloud | 3.8M | 87.6K | 409 |
| AS16591US | GOOGLE-FIBER - Google Fiber Inc. | 3.5M | 131.1K | 323 |
| AS15169US | GOOGLE - Google LLC | 3.4M | 722K | 1,219 |
| AS4155US | USDA-1 - USDA | 3.2M | 17.8M | 25 |