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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 1 |
| AS401493US | SUREPATH-AI - SurePath AI | 512 | — | 2 |
| AS394651US | AKUNA-BGP - Akuna Capital LLC | 512 | — | 2 |
| AS1015US | SERVERSTARTERHOST - Server Starter Host LLC | 512 | 256 | 3 |
| AS18920US | HEI - Hawaiian Electric Industries, Inc. | 512 | — | 2 |
| AS36811US | WIZTECH-INTERNET - Wiztech Internet | 512 | 1 | 3 |
| AS10998US | BAC-MLAMRS - Bank of America, National Association | 512 | — | 2 |
| AS20364US | FIREFLY - Firefly Network LLC | 512 | — | 2 |
| AS54639US | APOG-OSU-OK - Apogee Telecom Inc. | 512 | — | 1 |
| AS54362US | OGDEN-CITY-CORPORATION - Ogden City Corporation | 512 | — | 1 |
| AS14085US | LEARN-I2PX - LEARN | 512 | 2 | 4 |
| AS26941US | SHUTTERSTOCK - Shutterstock Inc | 512 | — | 2 |
| AS395252US | STAMFORD-HEALTH - Stamford Hospital | 512 | — | 2 |
| AS18870US | GWB - Great Western Bank | 512 | — | 2 |
| AS13978US | WHBE-OLYMPIA - Washington Health Benefit Exchange | 512 | — | 2 |
| AS33402US | BULLITT-COMMUNICATIONS - Bullitt Communications | 512 | 4.1K | 2 |
| AS21698US | TURBONET-NETWORK - TurboNet | 512 | — | 2 |
| AS395901US | KUDU-SYSTEMS - Kudu Systems, LLC | 512 | — | 2 |
| AS15053US | ROLL-GLOBAL-LLC - Roll Global LLC | 512 | 1 | 3 |
| AS7455US | MOTO-INT1-AS - Motorists Mutual Insurance Company | 512 | — | 2 |
| AS19209US | GMO-BOSTON - Grantham, Mayo, VanOtterloo & Co. LLC | 512 | — | 2 |
| AS961US | ACHIEVE-US - Achieve Wireless Inc | 512 | 257 | 4 |
| AS26700US | FORTRESSAS - FORTRESS INVESTMENT GROUP LLC | 512 | — | 2 |
| AS18956US | LLAMA-NETWORKS-01 - Llama Networks LLC | 512 | 2 | 4 |
| AS393579US | LEE-MEMORIAL-HEALTH-SYSTEM - Lee Memorial Health System | 512 | — | 2 |
| AS399346US | STMU-SATX-01 - St Mary's University | 512 | — | 2 |
| AS62722US | CSF-ASN-01 - Central States Southeast and Southwest Areas Health and Welfare and Pension Funds | 512 | — | 2 |
| AS22916US | PHS-CA - Providence Health & Services | 512 | — | 2 |
| AS18584US | ANKURA-ASN - Ankura Consulting Group LLC | 512 | — | 2 |
| AS16601US | CBTECH-ASN - Calexico Business Technologies | 512 | 65.5K | 4 |
| AS63243US | SYNERGENT - Synergent | 512 | — | 2 |
| AS399400US | INSPIRO-RELIA-US - Inspiro Relia US, Inc. | 512 | — | 2 |
| AS36769US | WGAL-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS395133US | MEDQUEST - MedQuest Associates, Inc. | 512 | — | 2 |
| AS397887US | HOSTMYCALLS-01 - HostMyCalls | 512 | — | 2 |
| AS40226US | GLOBALFCU - Global Credit Union | 512 | — | 2 |
| AS30707US | YABOIII - YaBoiii | 512 | — | 2 |
| AS396470US | LCC-EDU - Lansing Community College | 512 | — | 2 |
| AS399924US | ALLNEINS - All Neins LLC | 512 | 2 | 4 |
| AS54228US | INVTECHNOLOGIES - Invision Technologies, LLC | 512 | — | 2 |
| AS13755US | SPJC - St. Petersburg College | 512 | — | 1 |
| AS16961US | HIPCS-DALLAS-SERVER-OFFICE - AT&T Enterprises, LLC | 512 | — | 2 |
| AS5284US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS11328US | BIO-RAD-ASN - Bio-Rad Laboratories, Inc. | 512 | — | 2 |
| AS401844US | GSH-AS - Good Samaritan Hospital | 512 | — | 1 |
| AS46999US | CREWSBANKCORP - Crews Banking Corporation | 512 | — | 2 |
| AS213474US | HOMELINE-AS HomeLine Broadband LLC | 512 | — | 2 |