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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 | 21,160 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| CITY-OF-NEW-SMYRNA-BEACH-ASN - City of New Smyrna Beach |
| 256 |
| — |
| 1 |
| AS401387US | TWR-O-1 - TWR Tech, LLC | 256 | — | 1 |
| AS54956US | VEPC-ASN-01 - Vermont Electric Power Company, Inc. | 256 | — | 1 |
| AS399815US | LAER-AS-SYD1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS14941US | INTEGRATED-DOCUMENT-SOLUTIONS - Integrated Document Solutions, Inc | 256 | — | 1 |
| AS397761US | CISD-ASNNUMBER-01 - CORSICANA ISD | 256 | — | 1 |
| AS32492US | DANA - DANA INNOVATION | 256 | — | 1 |
| AS396954US | ZSS - The Root Group, Inc. | 256 | — | 1 |
| AS400071US | SIMON-TEL-AS - Simon Telephonics | 256 | 1 | 2 |
| AS401554US | UHH-ASN - Upland Hills Health | 256 | — | 1 |
| AS401283US | CHP - Capital Health Plan, Inc. | 256 | — | 1 |
| AS395608US | EA-CHATSWORTH - Electronic Arts, Inc. | 256 | — | 1 |
| AS394414US | AS394414 - E2W Solutions LLC | 256 | 32 | 3 |
| AS395644US | RGI - The Root Group, Inc. | 256 | — | 1 |
| AS393286US | CASCADEAS - Cascade Investment LLC | 256 | — | 1 |
| AS31858US | MWNA-ASN - MARSHALL WACE NORTH AMERICA L.P. | 256 | — | 1 |
| AS53613US | VIA-METRO-01 - VIA Metropolitan Transit | 256 | — | 1 |
| AS30185US | CITY-OF-ROCHESTER-NY - City of Rochester | 256 | — | 1 |
| AS399142US | RCSO-01 - Randall County Sheriff's Office | 256 | — | 1 |
| AS19455US | NORTH-KANSAS-CITY-SCHOOLS - North Kansas City Schools | 256 | — | 1 |
| AS1222US | EPCC-AS - EL PASO COMMUNITY COLLEGE | 256 | — | 1 |
| AS40683US | USPI - United Surgical Partners International, Inc. | 256 | — | 1 |
| AS397692US | OXBOW-ASN-01 - OXBOW CARBON LLC | 256 | — | 1 |
| AS399663US | KUEHN-NETWORKS - Kuehn Networks | 256 | 6 | 7 |
| AS26502US | MOMEN-5-ASN - Momentum Telecom, Inc. | 256 | — | 1 |
| AS398990US | JAA-ASN-26 - JACKSONVILLE AVIATION AUTHORITY | 256 | — | 1 |
| AS40293US | BENEDICTINE-UNIVERSITY - BENEDICTINE UNIVERSITY | 256 | — | 1 |
| AS397552US | NORTHEAST-DELTA-DENTAL - Northeast Delta Dental | 256 | — | 1 |
| AS11803US | OMNICELL - Omnicell | 256 | — | 1 |
| AS394387US | VUU - Virginia Union University | 256 | — | 1 |
| AS401345US | ERNESTECH-ASN-01 - ErnesTech LLC | 256 | — | 1 |
| AS25811US | DODI-01 - Diamond Offshore, LLC | 256 | — | 1 |
| AS11913US | ELEVATE-HOMESCRIPTIONS-01 - Elevate Homescriptions | 256 | 16 | 2 |
| AS393375US | BT-USMPL-MULTIHOME - Bio-Techne Corporation | 256 | — | 1 |
| AS398240US | IDENTIDAD - Identidad Telecom | 256 | — | 1 |
| AS19571US | ISB-45-19571 - IHC Specialty Benefits, Inc. | 256 | — | 1 |
| AS393241US | OU-ASN - UNION OF ORTHODOX JEWISH CONGREGATIONS OF AMERICA | 256 | — | 1 |
| AS400622US | OPTICWISE-US - OpticWise, Inc. | 256 | — | 1 |
| AS211341US | AXIOM-AS Shadi Zoldjalali | 256 | — | 1 |
| AS54724US | GAITHERSBURGMDGOV - City of Gaithersburg | 256 | — | 1 |
| AS394804US | JOERENDELL - Joerendell LLC | 256 | — | 1 |
| AS14870US | FLEXERA-SC4 - Flexera Software, LLC | 256 | — | 1 |
| AS1627US | TOWNEBANK - TowneBank | 256 | — | 1 |
| AS27517US | RPS-AS - Rochester Public Schools | 256 | — | 1 |
| AS53765US | SFFEDCU - San Francisco Federal Credit Union | 256 | — | 1 |
| AS39947US | TMGHEALTH - TMG Health, Inc | 256 | — | 1 |
| AS395614US | COL - City of Lansing | 256 | — | 1 |