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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| — |
| — |
| 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 |
| AS3478US | IGC-BACKBONE - State of Indiana | — | — | 0 |
| AS3485US | FCMCNET - Mizuho Americas Services LLC | — | — | 0 |
| AS3517US | DSI-WR - RTX BBN Technologies, Inc. | — | — | 0 |
| AS3526US | SCCS1 - South Coast Computing Services, Inc. | — | — | 0 |
| AS3534US | DNIC-AS-03534 - United States Department of Defense (DoD) | — | — | 0 |
| AS3544US | DNIC-AS-03544 - United States Department of Defense (DoD) | — | — | 0 |
| AS3554US | HALW - Holland America Line | — | — | 0 |
| AS3574US | ICTV-NET - ICTV, Inc. | — | — | 0 |
| AS3618US | MCIASN-BLK - Verizon Business | — | — | 0 |
| AS3651US | COGENT-3651 - Cogent Communications, LLC | — | — | 0 |
| AS3666US | DNIC-ASBLK-03664-03667 - United States Department of Defense (DoD) | — | — | 0 |
| AS3729US | NTTD-CUSTOMER-AS3 - NTT DATA Services Holdings Corporation | — | — | 0 |
| AS3731US | AFNCA-ASN - AFNCA Inc. | — | — | 0 |
| AS3805US | ASN-LAMB - Lamb & Company Inc. | — | — | 0 |
| AS3808US | CYBERGATE-AS - Cybergate Information Services | — | — | 0 |
| AS3849US | NET-HA - DMSSC/OAD | — | — | 0 |
| AS3860US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3875US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3881US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3890US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3963US | INTERLINK-1 - Verizon Business | — | — | 0 |
| AS3964US | INTERLINK-2 - Verizon Business | — | — | 0 |
| AS3987US | UTELFLA - Sprint/United Telephone-Florida | — | — | 0 |
| AS4020US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |