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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| AFCONC-BLOCK1-AS - Air Force Systems Networking |
| — |
| — |
| 0 |
| AS413US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS470US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS490US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS494US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS504US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS521US | FORD-SRL-AS - Ford Motor Company | — | — | 0 |
| AS533US | DNIC-AS-00533 - Headquarters, USAISC | — | — | 0 |
| AS552US | DNIC-AS-00552 - United States Department of Defense (DoD) | — | — | 0 |
| AS569US | DNIC-AS-00569 - United States Department of Defense (DoD) | — | — | 0 |
| AS597US | CENTURYLINK-LEGACY-LVLT-597 - Level 3 Parent, LLC | — | — | 0 |
| AS643US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS661US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS662US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS663US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS682US | AS-ORNL-IGRP1-AS - Oak Ridge National Laboratory | — | — | 0 |
| AS716US | DNIC-AS-00716 - Headquarters, USAISC | — | — | 0 |
| AS758US | MERIT-AS-24 - Merit Network Inc. | — | — | 0 |
| AS798US | DNIC-AS-00798 - Headquarters, USAISC | — | — | 0 |
| AS817US | UUNET-CANADA - Verizon Business | — | — | 0 |
| AS888US | AMECO-PRIMARY - AMECO | — | — | 0 |
| AS1210US | 3RD-US-ARMY-ASN - Headquarters, USAISC | — | — | 0 |
| AS1227US | SDSC-TEST1-AS - San Diego Supercomputer Center | — | — | 0 |
| AS1247US | DNIC-RAS-01247 - United States Department of Defense (DoD) | — | — | 0 |
| AS1319US | DNIC-AS-01319 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1365US | DNIC-AS-01365 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1386US | ANSBB-ASNNET-2 - Verizon Business | — | — | 0 |
| AS1409US | CATAPULSION-1 - Catapulsion LLC | — | — | 0 |
| AS1426US | TENSPIRE-NETWORK-1426 - TenSpire Network | — | — | 0 |
| AS1475US | DNIC-ASBLK-01474-01477 - Headquarters, USAISC | — | — | 0 |
| AS1479US | DNIC-ASBLK-01478-01479 - Headquarters, USAISC | — | — | 0 |
| AS1491US | DNIC-AS-01491 - Headquarters, USAISC | — | — | 0 |
| AS1500US | DNIC-ASBLK-01500-01502 - Headquarters, USAISC | — | — | 0 |
| AS1518US | DNIC-ASBLK-01513-01518 - Headquarters, USAISC | — | — | 0 |
| AS1519US | DNIC-AS-01519 - Headquarters, USAISC | — | — | 0 |
| AS1560US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1566US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1572US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1595US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1612US | FLUXTEL - Flux Telecom, LLC | — | — | 0 |
| AS1625US | CORESPACE - CoreSpace, Inc. | — | — | 0 |
| AS1665US | VFN-MARKETCENTERS - Verizon Business | — | — | 0 |
| AS1673US | ANS-BB - Verizon Business | — | — | 0 |
| AS1679US | FICO-AS - Fair Isaac Corporation | — | — | 0 |
| AS1731US | WPISASN - Warner Pacific Insurance Services Inc. | — | — | 0 |
| AS1760US | INTELNET - Intel Corporation | — | — | 0 |
| AS1792US | COGENT-1792 - Cogent Communications, LLC | — | — | 0 |