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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,222 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 512 |
| — |
| 2 |
| AS394687US | PFSCNET - PORTFOLIO FINANCIAL SERVICING COMPANY | 512 | — | 2 |
| AS468US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 512 | — | 1 |
| AS54354US | CHESSCOM-01 - Chess.com, LLC | 512 | — | 2 |
| AS402547US | JWYNEGARJR-INC - J | 512 | 1 | 3 |
| AS395518US | A2D-ECBI - A2D, Inc | 512 | 1 | 3 |
| AS32727US | SB - SB Professional Services | 512 | — | 2 |
| AS393505US | CENTRACU - Centra Credit Union | 512 | — | 2 |
| AS19704US | HCVT-01 - Howard Center, Inc. | 512 | 257 | 4 |
| AS401014US | HQ-HAE-ASN-01 - Helena Agri-Enterprise, LLC | 512 | — | 2 |
| AS17078US | ALLENCO - Allen & Company LLC | 512 | — | 2 |
| AS398367US | QUIC-CLOUD - Lite Speed Technologies Inc. | 512 | — | 2 |
| AS30634US | GSIC-VA - Radial, Inc. | 512 | — | 2 |
| AS32605US | BRAVESOFT-AS - BraveSoftTech Inc | 512 | — | 2 |
| AS36517US | AS-UGIUTIL - UGI Utilities Inc. | 512 | — | 2 |
| AS396337US | DE - Dreisbach Enterprises, Inc. | 512 | — | 2 |
| AS32411US | ASSURERX-HEALTH-CORPORATE - AssureRx Health, Inc. | 512 | — | 2 |
| AS400996US | UNIVERSAL-BROADBAND - AeroSurf | 512 | 65.5K | 3 |
| AS395143US | FMG-AS-1 - Fire Mountain Gems and Beads Inc. | 512 | — | 2 |
| AS7423US | PUTNAMFT - Putnam Fiduciary Trust | 512 | — | 2 |
| AS396066US | PASCO-COUNTY-BOCC - Pasco County Board of County Commissioners | 512 | — | 2 |
| AS395134US | CITYOFDAVIS - City of Davis | 512 | 256 | 3 |
| AS54675US | TGNA-WGRZ - TEGNA Inc. | 512 | — | 2 |
| AS32980US | NEUSTAR-AS5 - NeuStar, Inc. | 512 | — | 2 |
| AS12061US | 24HOURFITNESS - 24 Hour Fitness USA, Inc. | 512 | 4.1K | 2 |
| AS399216US | PACIRA-ASN - PACIRA PHARMACEUTICALS, INC. | 512 | — | 2 |
| AS29913US | GEICO03 - GEICO | 512 | — | 2 |
| AS53493US | JOEMC-1 - Jones Onslow Electric Membership Corporation | 512 | — | 2 |
| AS53434US | SRI-INTERNATIONAL-PRINCETON - SRI International | 512 | — | 1 |
| AS26004US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 512 | 4.1K | 3 |
| AS46369US | TGNA-KUSA-KTVD - TEGNA Inc. | 512 | — | 2 |
| AS395402US | NAR-19 - National Association of Realtors | 512 | — | 2 |
| AS394607US | SAUSD-ASN-1 - Santa Ana Unified School District | 512 | — | 2 |
| AS32438US | GRO-UCFUSM-1N - Michigan State University Federal Credit Union | 512 | — | 2 |
| AS401446US | CVDN - Converted Networks LLC | 512 | 4.1K | 2 |
| AS26903US | SALISBURY-ASN - City of Salisbury, North Carolina | 512 | — | 2 |
| AS26963US | CCCU-1 - City & County Credit Union | 512 | — | 2 |
| AS398385US | PHOTOSHELTER-CDN - PhotoShelter, Inc. | 512 | — | 2 |
| AS55128US | MCFASSOC - McFarlane Associates LLC | 512 | 17 | 4 |
| AS36710US | NAKAYAMA - Nakayama Systems LLC | 512 | 5 | 7 |
| AS13779US | BASISTECH - Basis Technology | 512 | — | 2 |
| AS397081US | VALKYRIE-HOSTING - Valkyrie Hosting LLC | 512 | — | 2 |
| AS13928US | ITRIG-ASN1 - IT Right, Inc | 512 | — | 2 |
| AS62884US | HKLAW - Holland & Knight LLP | 512 | — | 2 |
| AS18903US | LENDINGTREE - LENDING TREE | 512 | — | 2 |
| AS400079US | ANGELTRAX - IVS, Inc. | 512 | — | 2 |
| AS11731US | AS11731 - Weston Solutions, Inc. | 512 | — | 2 |