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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 |
| — |
| 17 |
| 2 |
| AS6202US | NEXTRON - IMV/Internet | — | — | 0 |
| AS6390US | KANSASCITY - The Kansas City Star | — | — | 0 |
| AS6317US | MILLENNIANET - MillenniaNet, LLC | — | — | 0 |
| AS6288US | PERTECH-CA-01 - PerTech Inc. | — | — | 0 |
| AS6020US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6038US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS397240US | SECURITYSERVICES - Vercara, LLC | — | — | 0 |
| AS6570US | CNCS - AmeriCorps | — | 256 | 1 |
| AS5373US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS4104US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4288US | CENTURYLINK-TSDS-NCJCVL - CenturyLink Communications, LLC | — | — | 0 |
| AS4031US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS3822US | ITSNET - Internet Technology Systems | — | — | 0 |
| AS3907US | CONNECT-1-NET - Connected INC | — | — | 0 |
| AS3664US | DNIC-ASBLK-03664-03667 - United States Department of Defense (DoD) | — | — | 0 |
| AS62900US | KERFUFFLE-62900 - Kerfuffle, LLC | — | 2 | 2 |
| AS4950US | ASN-SPRN-NYSERNET1 - SPRINT, Business Serices Group | — | — | 0 |
| AS5246US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5150US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS1340US | ANSBB-ASNNET-1 - Verizon Business | — | — | 0 |
| AS2972US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS11021US | NVH-ASN - North Valley Hospital | — | 256 | 1 |
| AS134US | CORONA-GW-AS - Fleet Analysis Center | — | — | 0 |
| AS403190US | MC-AS1 - USP | — | — | 0 |
| AS238US | MERIT-AS-15 - Merit Network Inc. | — | — | 0 |
| AS236US | MERIT-AS-13 - Merit Network Inc. | — | — | 0 |
| AS11US | HARVARD - Harvard University | — | — | 0 |
| AS83US | DNIC-AS-00083 - Headquarters, USAISC | — | — | 0 |
| AS403189US | US-HOSTING-AS - LEAPNET | — | — | 0 |
| AS401519US | SUNOAKI-NET-CCH - Sunoaki Network LLC | — | 2 | 2 |
| AS508US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS402926US | ZENTRO-INTERNET-TEXAS - Everywhere | — | — | 0 |
| AS581US | AMC-MAF-C2-ENCLAVES - Air Force Systems Networking | — | — | 0 |
| AS17332US | TAXACT2 - 2nd Story Software, Inc. | — | — | 0 |
| AS689US | MERIT-AS-31 - Merit Network Inc. | — | — | 0 |
| AS751US | MERIT-AS-17 - Merit Network Inc. | — | — | 0 |
| AS615US | DNIC-AS-00615 - Headquarters, USAISC | — | — | 0 |
| AS11006US | HRT-SCS - HRTec | — | 65.7K | 2 |
| AS6008US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS418US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS310US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | — | — | 0 |
| AS307US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | — | — | 0 |
| AS5949US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS57848US | SKY Sky Walters | — | 3 | 3 |
| AS5944US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS197346US | SYLANT-ASN Sylant LLC | — | 257 | 2 |