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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| — |
| — |
| 0 |
| AS1223US | AINET-AS1223 - American Information Network | — | — | 0 |
| AS1259US | WRAIR-ASN - Headquarters, USAISC | — | — | 0 |
| AS1276US | DSI-WR-18 - Advanced Technology Services | — | — | 0 |
| AS1331US | ANSBB-ASNNET-1 - Verizon Business | — | — | 0 |
| AS1335US | ANSBB-ASNNET-1 - Verizon Business | — | — | 0 |
| AS1344US | DNIC-AS-01344 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1345US | DNIC-AS-01345 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1396US | T2-JC-AN - Charles Schwab & Co., Inc. | — | — | 0 |
| AS1402US | T2-CT-PFE - Charles Schwab & Co., Inc. | — | — | 0 |
| AS1404US | VERTICALRESPONSE - VerticalResponse, Inc. | — | — | 0 |
| AS1452US | DNIC-ASBLK-01451-01456 - Headquarters, USAISC | — | — | 0 |
| AS1482US | DNIC-AS-01482 - Headquarters, USAISC | — | — | 0 |
| AS1485US | DNIC-AS-01485 - Headquarters, USAISC | — | — | 0 |
| AS1494US | DNIC-ASBLK-01494-01495 - Headquarters, USAISC | — | — | 0 |
| AS1506US | WOOD-AS - Headquarters, USAISC | — | — | 0 |
| AS1527US | DNIC-AS-01527 - Headquarters, USAISC | — | — | 0 |
| AS1534US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | — | — | 0 |
| AS1549US | DNIC-ASBLK-01548-01549 - Headquarters, USAISC | — | — | 0 |
| AS1573US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1626US | DNIC-AS-1626 - Headquarters, USAISC | — | — | 0 |
| AS1684US | ANS-1684-AS - Verizon Business | — | — | 0 |
| AS1697US | NETENG-MONITORING - Verizon Business | — | — | 0 |
| AS1735US | FISHER-AS - Fisher Controls Int. Inc. | — | — | 0 |
| AS1745US | CRT-AS - Chicago Reseach and Trading | — | — | 0 |
| AS1801US | COGENT-1801 - Cogent Communications, LLC | — | — | 0 |
| AS2006US | INFONET2 - INFONET Services Corporation | — | — | 0 |
| AS2378US | DOI-BIA - DOI - BIA | — | — | 0 |
| AS2550US | STRATS - Air Force Systems Networking | — | — | 0 |
| AS2580US | ASSEMBLY - California ASSEMBLY | — | — | 0 |
| AS2742US | TASDAC-LAFB - Air Force Systems Networking | — | — | 0 |
| AS2744US | DNIC-AS-02744 - United States Department of Defense (DoD) | — | — | 0 |
| AS2746US | DNIC-AS-02746 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS2748US | DNIC-AS-02748 - United States Department of Defense (DoD) | — | — | 0 |
| AS2890US | MCI-AREA-3 - Verizon Business | — | — | 0 |
| AS2924US | EQUIFAX-NS - Equifax, Inc. | — | — | 0 |
| AS2942US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3023US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3121US | MAGIC-INTRNL - General Magic, Inc. | — | — | 0 |
| AS3129US | WISC2-AS - University of Wisconsin Madison | — | — | 0 |
| AS3135US | MITC - Maryland Information Technology Center | — | — | 0 |
| AS3370US | MCI-ASN - Verizon Business | — | — | 0 |
| AS3422US | ATTIS-ASN3422 - AT&T Enterprises, LLC | — | — | 0 |
| AS3435US | ESNET-AS - ESnet | — | — | 0 |
| AS3439US | ESNET-AS - ESnet | — | — | 0 |
| AS3451US | DTD-AS - Downtown Digital | — | — | 0 |
| AS3458US | VWNA-AS - Volkswagen Group of America, Inc. | — | — | 0 |