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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| 512 |
| — |
| 2 |
| AS32155US | NHC-NV1 - New Horizon Communications Corp. | 512 | — | 2 |
| AS21946US | IVSH-ATL-ASN - iVenture Solutions. LLC | 512 | — | 1 |
| AS16971US | AIG-CLOUD-01 - ANSWERS IN GENESIS, INC. | 512 | — | 1 |
| AS55131US | TCD-INC - Special Operations Command | 512 | — | 2 |
| AS54747US | UTASC - UMPQUA BANK | 512 | — | 2 |
| AS400672US | AS-PHOENIXNAP-LA0 - PhoenixNAP LLC | 512 | 257 | 4 |
| AS32280US | THE-EWSCRIPPS - The E.W. Scripps Company | 512 | — | 2 |
| AS393991US | ONCU-D - ONE NEVADA CREDIT UNION | 512 | — | 2 |
| AS30699US | CORECIVIC - CoreCivic, Inc. | 512 | — | 2 |
| AS32605US | BRAVESOFT-AS - BraveSoftTech Inc | 512 | — | 2 |
| AS397873US | AS-SOLADRIVE - SolaDrive | 512 | — | 2 |
| AS398906US | CVHQ - Conviction HQ | 512 | — | 2 |
| AS19317US | BLUESKY-SOCIAL-PBC-1 - Bluesky Social, PBC | 512 | — | 2 |
| AS53752US | USDIGITAL - US Digital | 512 | — | 2 |
| AS399341US | CD - Campaign Deputy | 512 | 16 | 3 |
| AS27528US | EIKON-ASN-01 - Eikon Therapeutics, Inc. | 512 | — | 1 |
| AS393925US | SAMUEL-A-RAMIREZ-AS - Samuel A. Ramirez & Company, Inc | 512 | — | 2 |
| AS42495US | Spencer-Sharkey Spencer Sharkey | 512 | — | 2 |
| AS36761US | KSBW-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS36106US | MANAGEDNODES - Managed Nodes LLC | 512 | — | 1 |
| AS400398US | MFSG - Money Mart Financial Services Group | 512 | — | 1 |
| AS54982US | RATE - Guaranteed Rate Inc | 512 | — | 2 |
| AS46675US | GREENVIEWDATA - Greenview Data | 512 | — | 2 |
| AS399046US | DRPA-ASN-01 - The Delaware River Port Authority | 512 | — | 2 |
| AS401824US | CORITAN - Coritan LLC | 512 | — | 2 |
| AS40140US | COGNEX-DU - Cognex Corporation | 512 | — | 2 |
| AS33129US | CITY-OF-GARDEN-GROVE - City of Garden Grove | 512 | — | 2 |
| AS397784US | KTSL-ASN - Kilpatrick Townsend and Stockton, LLP | 512 | — | 2 |
| AS32438US | GRO-UCFUSM-1N - Michigan State University Federal Credit Union | 512 | — | 2 |
| AS399936US | PBX-SALTLAKECITY - PBXIO LLC | 512 | 4.1K | 3 |
| AS46169US | GTOWN - City of Georgetown | 512 | — | 2 |
| AS36457US | DISTR-21 - District Photo, Inc. | 512 | — | 2 |
| AS396000US | TEAMINDUSTRIALSERVICES - Team Industrial Services, Inc. | 512 | — | 2 |
| AS46952US | CALYON-1301 - Calyon America Services, Inc. | 512 | — | 2 |
| AS393982US | WIDEORBIT-WOCLOUD - WideOrbit LLC | 512 | — | 2 |
| AS393535US | FORTBENDCOUNTY - Fort Bend County | 512 | — | 2 |
| AS11204US | KPCSD - Kings Park Central School District | 512 | — | 2 |
| AS11865US | EPE-ASN-BGP-1 - El Paso Electric | 512 | — | 2 |
| AS394607US | SAUSD-ASN-1 - Santa Ana Unified School District | 512 | — | 2 |
| AS1010US | WHT-ASN-01 - Walnut Hill Communications | 512 | — | 2 |
| AS400731US | VTS-SERVICES - VTS Services Inc | 512 | 2 | 4 |
| AS29794US | CR-DATL-01 - CohnReznick LLP | 512 | — | 2 |
| AS23408US | TBI-001 - Trail Blazers, Inc. | 512 | — | 2 |
| AS13779US | BASISTECH - Basis Technology | 512 | — | 2 |
| AS396271US | S-J-ROLLINS-TECHNOLOGIES - S. J. Rollins Technologies | 512 | — | 2 |
| AS54964US | PBC-CORPASN - Premier Business Centers | 512 | — | 2 |