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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 2K |
| — |
| 1 |
| AS26779US | CFISD - Cypress-Fairbanks ISD | 2K | — | 5 |
| AS46956US | EAGLESEVEN - Eagle Seven Technologies, LLC | 2K | — | 5 |
| AS400595US | 281-COMMUNICATIONS-CORPARATION-INC - 281 Communications Corporation Inc. | 2K | — | 3 |
| AS14959US | MODISPRO - Adecco USA Inc | 2K | — | 3 |
| AS26541US | GUAVA-AS - GuavaTech Inc. | 2K | — | 7 |
| AS22319US | FOGODC - Fogo Data Centers | 2K | — | 8 |
| AS401944US | VORTEX WIRELESS INTERNET - Vortex Wireless Internet | 2K | — | 4 |
| AS62938US | SKY-VALLEY-NETWORK-LLC - Sky Valley Network | 2K | — | 5 |
| AS63459US | INSTINET-LSET - Instinet | 2K | — | 4 |
| AS14143US | RSINET-1 - Rock Solid Internet & Telephone | 2K | — | 1 |
| AS393360US | TYLERTECH-NIC2 - Tyler Technologies, Inc. | 2K | — | 7 |
| AS29893US | CHATANGO - Chatango LLC | 2K | — | 3 |
| AS54003US | ULS-LLC - Urban Lending Solutions | 2K | — | 2 |
| AS53283US | LITWARE - Litware LLC | 2K | 65.5K | 10 |
| AS396841US | VERTICAL-HORIZON-NET - Vertical Horizon Networks | 2K | 65.5K | 4 |
| AS54634US | SNAP-INTERNET - Snap Internet LLC | 2K | — | 1 |
| AS395450US | BOINGO-WIRELESS-BROADBAND - Boingo Wireless, Inc. | 2K | — | 1 |
| AS26448US | CBD - Christian Book Distributors, LLC | 2K | — | 5 |
| AS13482US | ZWEIG-DIMENNA - Zweig-DiMenna Associates, LLC. | 2K | — | 1 |
| AS201665US | KSTNETWORKS Anonymizer, LLC | 2K | — | 8 |
| AS14221US | UW-GR-AS - University of Washington | 2K | 256 | 2 |
| AS396528US | WEBAIR-CHI - Webair Internet Development Company Inc. | 2K | — | 7 |
| AS20038US | ALLENTOWNSD - Allentown School District | 2K | — | 1 |
| AS20467US | SW-ORG-AS - Baylor Health Care System | 2K | — | 8 |
| AS14417US | LANDSTAR - Landstar System Inc | 2K | — | 8 |
| AS399461US | HOSTSNAP-NETWORK - HostSNAP LLC | 2K | — | 4 |
| AS1347US | VOYANT-LAB - Inteliquent, inc. | 2K | — | 5 |
| AS397865US | MORTGAGE-RESEARCH-CENTER - Veterans United Home Loans | 2K | — | 6 |
| AS21750US | CPOINT-NET-1 - CPOINT | 2K | — | 4 |
| AS26362US | TRAVISCU - Travis Credit Union | 2K | — | 4 |
| AS394283US | BEACON-HEALTH-SYSTEM - Beacon Health System, Inc. | 2K | — | 2 |
| AS22012US | REALOGY-MADISON - NRT Inc. | 2K | — | 5 |
| AS14334US | PRIMARYAS - Renaissance Learning Inc. | 2K | — | 4 |
| AS393619US | UBX-DT1 - UBX Cloud | 2K | — | 5 |
| AS399654US | 360-NETWORKS - 360 Networks | 2K | — | 8 |
| AS394221US | COVESTRO-US-ASN - Covestro LLC | 2K | — | 4 |
| AS46110US | CHEMEKETA-COMMUNITY-COLLEGE - Chemeketa Community College | 2K | — | 1 |
| AS13518US | GONETSPEED-WV - GoNetSpeed | 2K | — | 2 |
| AS3955US | CMPC-2008 - Compucom Systems | 2K | — | 8 |
| AS402718US | TUNSLAB - TUNSLAB | 2K | 2 | 7 |
| AS26529US | HILTON-E - Hilton Worldwide Holdings Inc | 2K | — | 2 |
| AS40942US | CAPECODCC - Cape Cod Community College | 2K | — | 1 |
| AS399589US | 1111-SYSTEMS - 11 11 Systems, Inc | 2K | 1 | 9 |
| AS22462US | NOLA-BROADBAND-INC - NOLA BROADBAND LLC | 2K | 4.1K | 3 |
| AS26490US | PIKE-EXTERNAL-BGP - Pike Enterprises, LLC | 2K | — | 1 |
| AS29997US | VITAL-DNS - Vitalwerks Internet Solutions, LLC | 2K | 83 | 16 |