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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 |
| 256 |
| — |
| 1 |
| AS26823US | INTERCEPT1 - First International Bank & Trust | 256 | — | 1 |
| AS401193US | USD305REQUEST - SALINA UNIFIED SCHOOL DISTRICT | 256 | — | 1 |
| AS397129US | LIFESCAN-GLOBAL-CORP - LifeScan Global Corporation | 256 | — | 1 |
| AS1615US | EXEL - Exelixis Inc. | 256 | — | 1 |
| AS21670US | BPC-CERMAK - Berlin Packaging, LLC | 256 | — | 1 |
| AS33335US | HEAVISIDE-HOSTING-GROUP - Heaviside Hosting LLC | 256 | — | 1 |
| AS46515US | TOONTOWN - Toons of the World Foundation | 256 | 2 | 2 |
| AS46590US | CITY-OF-CHARLESTON - City of Charleston | 256 | — | 1 |
| AS395998US | SCSLC - SOUTH CAROLINA STUDENT LOAN CORPORATION | 256 | — | 1 |
| AS19922US | AS-OASIS - OASIS NETWORKS | 256 | — | 1 |
| AS398410US | VIRTUWORKS - Virtuworks | 256 | — | 1 |
| AS25621US | ASN-GENESIS - Genesis Health System | 256 | — | 1 |
| AS33466US | FLVS-AS - Florida Virtual School | 256 | — | 1 |
| AS393500US | GERMANTOWNFRIENDSSCHOOL - Germantown Friends School | 256 | — | 1 |
| AS13801US | CONCORD-CARLISLE-MA - Concord-Carlisle Regional School District | 256 | — | 1 |
| AS62905US | DART-CONTAINER-CORPORATION-ASN - Dart Container Corporation | 256 | — | 1 |
| AS19014US | NORCOM - NORCOM | 256 | 1 | 2 |
| AS393533US | SECWITECH-NETWORKS - SECURITY WIRELESS & TECHNOLOGY L.L.C. | 256 | — | 1 |
| AS26457US | NONEXISTE-AS - nonexiste.net | 256 | 21 | 6 |
| AS22721US | SPC-12 - Saint Peter's University | 256 | — | 1 |
| AS214732US | RATATOSKR RATATOSKR LLC | 256 | 3 | 4 |
| AS400181US | SIGYN-SYSTEMS-0 - Sigyn Systems | 256 | 4.1K | 2 |
| AS396138US | DKM9-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS63477US | CONIFER-EDGE - Coniferous Systems, LLC | 256 | 1 | 2 |
| AS399922US | ST-AUG-NC - Apogee Telecom Inc. | 256 | — | 1 |
| AS40296US | RUBENSTEIN-COMMUNICATIONS - Rubenstein Associates, Inc. | 256 | — | 1 |
| AS396912US | CEICMHA - Community Mental Health Authority of Clinton-Eaton-Ingham Counties | 256 | 256 | 2 |
| AS63048US | CONFIRE - Confire JPA | 256 | — | 1 |
| AS398112US | POET-ASN-01 - POET, LLC | 256 | — | 1 |
| AS19851US | DOYLESTOWN-HOSPITAL - Doylestown Hospital | 256 | — | 1 |
| AS22831US | SCG-ARIN - THE SCIENTIFIC CONSULTING GROUP, INC | 256 | — | 1 |
| AS394155US | ENSTARAKASN - Enstar Natural Gas Company | 256 | — | 1 |
| AS32763US | BS32BJB-HF - Building Service 32BJ Benefit Funds | 256 | — | 1 |
| AS23194US | PENNANT-PARK - PennantPark Investment Corporation | 256 | — | 1 |
| AS401884US | MIYA-TELECOM - Miya Telecom LLC | 256 | — | 1 |
| AS401691US | ABM-859 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS399032US | CNC-NET-01 - Cosner-Neipp Corporation | 256 | 4.1K | 2 |
| AS37935US | KYNDRYLINC-AS-AP - Kyndryl INC | 256 | — | 1 |
| AS402149US | WAN2 - WAN2 LLC | 256 | — | 1 |
| AS54667US | DDAF-FTW - Dean Dorton | 256 | — | 1 |
| AS19779US | SGFD - St. George Fire Department | 256 | 256 | 2 |
| AS393399US | SNL-KTF - Sandia National Laboratories | 256 | — | 1 |
| AS397329US | CSCI-3662 - Central Security Communications, Inc. | 256 | — | 1 |
| AS393348US | SUC-CORP1 - Southern Union Conference of Seventh day Adventists | 256 | — | 1 |
| AS21619US | GREYWOLF-CAPITAL - Greywolf Capital Management LP | 256 | — | 1 |
| AS397284US | OCHS-01 - Oakland Catholic High School | 256 | — | 1 |