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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 81.8M |
| 9.2M |
| 1,361 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 131.1K | 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 554.2M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 553.4K | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 267.7K | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 19.2M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 3.8M | 4,491 |
| AS3356US | LEVEL3 - Level 3 Parent, LLC | 34.5M | 1.3M | 2,107 |
| AS22394US | CELLCO - Verizon Business | 31M | 2.8M | 289 |
| AS209US | CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC | 26.2M | 17.1M | 1,624 |
| AS22773US | ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc. | 24.4M | 2.1M | 6,501 |
| AS14618US | AMAZON-AES - Amazon.com, Inc. | 24M | 305.6K | 2,236 |
| AS6167US | CELLCO-PART - Verizon Business | 18.3M | 16.9K | 3,885 |
| AS21928US | T-MOBILE-AS21928 - T-Mobile USA, Inc. | 14M | 1.2M | 544 |
| AS20115US | CHARTER-20115 - Charter Communications LLC | 13.3M | 7.7M | 4,732 |
| AS5650US | FRONTIER-FRTR - Frontier Communications of America, Inc. | 13.2M | 1.1M | 1,117 |
| AS7377US | UCSD - University of California, San Diego | 12.9M | 81.9K | 20 |
| AS7029US | WINDSTREAM - Windstream Communications LLC | 12.9M | 21.4M | 3,261 |
| AS10796US | TWC-10796-MIDWEST - Charter Communications Inc | 9.9M | 1.4M | 662 |
| AS3257US | GTT-BACKBONE GTT Communications Inc. | 9.4M | 6.2M | 1,955 |
| AS1540US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | 8.7M | 64 | 2,213 |
| AS4249US | LILLY-AS - Eli Lilly and Company | 8.7M | — | 246 |
| AS56US | DNIC-AS-00056 - United States Department of Defense (DoD) | 8.4M | — | 931 |
| AS20001US | TWC-20001-PACWEST - Charter Communications Inc | 7.9M | 1.6M | 594 |
| AS3561US | CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC | 7.5M | 5 | 721 |
| AS6128US | CABLE-NET-1 - Cablevision Systems Corp. | 7.2M | 2.4M | 89 |
| AS19108US | SUDDENLINK-COMMUNICATIONS - Optimum | 7M | 114.8K | 422 |
| AS2914US | NTT-DATA-2914 - NTT America, Inc. | 6.7M | 460.8K | 1,681 |
| AS2828US | XO-AS15 - Verizon Business | 6.7M | 65.5K | 86 |
| AS20057US | ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC | 6.6M | 60.1K | 1,633 |
| AS6079US | RCN-AS - RCN | 6M | 27.9M | 3,155 |
| AS31898US | ORACLE-BMC-31898 - Oracle Corporation | 6M | 962.9K | 3,888 |
| AS33363US | BHN-33363 - Charter Communications, Inc | 5.9M | 1.2M | 471 |
| AS11427US | TWC-11427-TEXAS - Charter Communications Inc | 5.9M | 3.5M | 416 |
| AS702US | UUNET - Verizon Business | 5.9M | 10M | 466 |
| AS3549US | LVLT-3549 - Level 3 Parent, LLC | 5.4M | 999.5K | 824 |
| AS306US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 4.7M | 568 | 334 |
| AS6389US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | 4.5M | — | 54 |
| AS11426US | TWC-11426-CAROLINAS - Charter Communications Inc | 4.5M | 1.3M | 237 |
| AS16625US | AKAMAI-AS - Akamai Technologies, Inc. | 4.4M | 2 | 2,054 |
| AS11351US | TWC-11351-NORTHEAST - Charter Communications Inc | 4.3M | 1.2M | 142 |
| AS11003US | PANDG - The Procter and Gamble Company | 4.1M | — | 39 |
| AS36351US | SOFTLAYER - IBM Cloud | 3.8M | 87.6K | 414 |
| AS16591US | GOOGLE-FIBER - Google Fiber Inc. | 3.6M | 131.1K | 343 |
| AS15169US | GOOGLE - Google LLC | 3.5M | 787.5K | 1,252 |
| AS4155US | USDA-1 - USDA | 3.2M | 17.8M | 25 |
| AS19901US | BRIGHTSPEED - Brightspeed | 3.2M | 9.7K | 1,443 |