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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,263 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 641 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,336 |
| 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.
32,247 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,004 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,350 |
| 2K |
| — |
| 3 |
| AS393360US | TYLERTECH-NIC2 - Tyler Technologies, Inc. | 2K | — | 7 |
| AS54905US | DIGITAL-LANDSCAPE - Digital Landscape, Inc. | 2K | — | 1 |
| AS64224US | ATINET - ATI Solutions | 2K | 5.1K | 11 |
| AS396930US | OPUS-INTERACTIVE-VA1 - Opus Interactive | 2K | 4.1K | 5 |
| AS33189US | SOUTH-DAKOTA-RESEARCH-AND-EDUCATION-NETWORK - South Dakota Board of Regents | 2K | 65.5K | 6 |
| AS26541US | GUAVA-AS - GuavaTech Inc. | 2K | — | 7 |
| AS5777US | RIBBON - Ribbon Communications Operating Company, Inc. | 2K | — | 8 |
| AS14849US | SCSD-AS - Superior Court of California, County of San Diego | 2K | — | 5 |
| AS54003US | ULS-LLC - Urban Lending Solutions | 2K | — | 2 |
| AS396528US | WEBAIR-CHI - Webair Internet Development Company Inc. | 2K | — | 7 |
| AS20038US | ALLENTOWNSD - Allentown School District | 2K | — | 1 |
| AS395349US | CLOUDSAFE-PROVIDER - Cloudsafe, Ltd. | 2K | 65.5K | 7 |
| AS64281US | NET3-ISP - Ridgewood Holdings LLC | 2K | — | 6 |
| AS396841US | VERTICAL-HORIZON-NET - Vertical Horizon Networks | 2K | 65.5K | 4 |
| AS16638US | CORNINGINC01 - Corning Incorporated | 2K | — | 4 |
| AS26529US | HILTON-E - Hilton Worldwide Holdings Inc | 2K | — | 2 |
| AS398981US | FSCJ - FSCJ | 2K | — | 5 |
| AS14221US | UW-GR-AS - University of Washington | 2K | 256 | 2 |
| AS395885US | N3T-ASN-1 - Net3 Technology Inc. | 2K | — | 4 |
| AS36440US | TGNA-WCNC - TEGNA Inc. | 2K | — | 8 |
| AS40355US | SUNDANCE-NET - Sundance International LLC | 2K | — | 8 |
| AS10868US | DOWNCITY - DownCity LLC | 2K | — | 1 |
| AS22441US | WHITWORTH-NET - Whitworth University | 2K | — | 5 |
| AS397993US | AXA-GROUP-OPERATIONS - AXA GROUP OPERATIONS AMERICAS INC. | 2K | — | 5 |
| AS400595US | 281-COMMUNICATIONS-CORPARATION-INC - 281 Communications Corporation Inc. | 2K | — | 3 |
| AS399761US | STREAMIT-001 - Stream IT Networks LLC | 2K | 4.1K | 6 |
| AS401920US | MOW-MT - Montana Outback Wireless Inc. | 2K | — | 5 |
| AS27240US | NETAS-STL - Netelligent Corporation | 2K | — | 8 |
| AS32010US | TSIS-LLC - Top Speed Internet Service | 2K | — | 2 |
| AS26490US | PIKE-EXTERNAL-BGP - Pike Enterprises, LLC | 2K | — | 1 |
| AS1442US | ASNSISL - SureHosting Internet Solutions, Inc. | 2K | 65.5K | 3 |
| AS14134US | NAVISITE-WEST-2 - Navisite Opco LLC | 2K | — | 1 |
| AS46536US | VIASAT-CARLSBAD - ViaSat, Inc. | 2K | — | 8 |
| AS397463US | WASHINGTON-ISLAND-ELECTRIC-COOP - Washington Island Electric Cooperative, Inc. | 2K | 69.6K | 4 |
| AS53283US | LITWARE - Litware LLC | 2K | 65.5K | 10 |
| AS27163US | INTERACTIVE-BROKERS-CORP - Interactive Brokers Corp | 2K | — | 6 |
| AS42633US | DeloitteToucheTohmatsu-Global Deloitte Touche Tohmatsu Services, LLC | 2K | 8.2K | 8 |
| AS46399US | WAVELINC-1 - Wavelinc Communications LLC | 2K | — | 5 |
| AS14959US | MODISPRO - Adecco USA Inc | 2K | — | 3 |
| AS25713US | AS-DTS - Dollar Tree | 2K | — | 5 |
| AS36741US | FRONTIER-AIRLINES-INC - FRONTIER AIRLINES INC | 2K | 258 | 8 |
| AS15328US | DATAPRISE-INC - Dataprise, Inc. | 2K | — | 8 |
| AS394221US | COVESTRO-US-ASN - Covestro LLC | 2K | — | 4 |
| AS19586US | FIRST-CITY-INTERNET - First City Internet, LLC | 2K | 8 | 16 |
| AS26216US | INVISALINKWIRELESSMI - Invisalink Wireless | 2K | 65.5K | 9 |
| AS11973US | SECUREINDEPENDENCE - Secure Independence, Inc | 2K | — | 1 |