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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 |
| 768 |
| — |
| 3 |
| AS29923US | NPC-AS-1 - Northland Pioneer College | 768 | — | 3 |
| AS11199US | SHOWNETSAS - showNets LLC | 768 | — | 3 |
| AS395861US | MIA - Medical Imaging Associates of Idaho Falls, Inc. | 768 | — | 3 |
| AS11806US | LEEPFROG - Leepfrog Technologies, Inc. | 768 | — | 3 |
| AS23233US | FENWICK - Fenwick & West, LLP. | 768 | — | 3 |
| AS401506US | TOGETHER-COMPUTER - Together Computer, Inc. | 768 | — | 3 |
| AS17341US | AS17341 - StorageCraft Technology, LLC | 768 | — | 3 |
| AS14864US | GREENWICH - NatWest Markets Securities Inc. | 768 | — | 3 |
| AS26476US | CYBERU - CyberU, Inc. | 768 | — | 3 |
| AS393483US | YEO-YEO - Yeo & Yeo CPAs & Business Consultants | 768 | 1 | 4 |
| AS55263US | UNITEDLEX - UnitedLex Corporation | 768 | — | 3 |
| AS16392US | PIONEER-STANDARD - Agilysys Inc. | 768 | — | 3 |
| AS26976US | LIZ-CLAIBORNE-INC - Kate Spade Holdings LLC | 768 | — | 3 |
| AS21784US | AUCRWWL - The Robert W. Woodruff Library of the Atlanta University Center, Inc. | 768 | — | 2 |
| AS394930US | CUSTBANK-AS - CUSTOMERS BANK | 768 | — | 3 |
| AS399372US | JNET - Pueblo of Jemez | 768 | — | 3 |
| AS12185US | ASN1 - Thompson, Siegel & Walmsley LLC | 768 | — | 3 |
| AS10494US | AAI - Rodney Grimes, Sole Proprietorship | 768 | 4.1K | 3 |
| AS401450US | PLXN-ASN-USEAST1 - Pluxcon Network USA LLC | 768 | 2 | 5 |
| AS218520US | ORG-LACL1-AS Lumen Arc Connect LLC | 768 | — | 3 |
| AS26160US | LCEC-BGPNET-YHWH - LCEC | 768 | — | 3 |
| AS13754US | TKFAST - TkFast Inc | 768 | — | 2 |
| AS19536US | DIRECTV-SDWAN-DXC - DIRECTV, LLC | 768 | — | 3 |
| AS214206US | Four-Seasons-Hosting Four Seasons Hosting LLC | 768 | 1 | 4 |
| AS4566US | CYRACOM-INTERNATIONAL-ASN - CYRACOM INTERNATIONAL INC | 768 | — | 3 |
| AS16928US | UTCNET - RTX Corporation | 768 | — | 3 |
| AS398476US | TORC-ROBOTICS - TORC Robotics, Inc. | 768 | — | 3 |
| AS20075US | RFERL-ORG - Radio Free Europe | 768 | — | 3 |
| AS400846US | TAMPA-COLO-ASN-PRIMARY - Tampa Co-Op | 768 | 257 | 4 |
| AS26187US | ADVENTURECK - ADVENTURECK | 768 | — | 3 |
| AS398756US | SUNYBROOME-AS - SUNY Broome Community College | 768 | — | 3 |
| AS30302US | ASPEN-DENTAL-INC - ASPEN DENTAL MANAGEMENT, INC. | 768 | — | 3 |
| AS32267US | WILLOWEB - Willoweb, LLC | 768 | — | 2 |
| AS396285US | CBTS-AS-FGA - Cincinnati Bell Technology Solutions | 768 | — | 3 |
| AS402153US | QUICK-TECH-RESULTS-01 - Quick Tech Results LLC | 768 | 256 | 3 |
| AS33499US | LHP-NET - AHS Management Company, Inc. | 768 | — | 3 |
| AS23284US | COMPL-AS - Complete Genomics Inc. | 768 | — | 3 |
| AS62998US | USAZY - USAZY INC. | 768 | — | 3 |
| AS25785US | REDL-1 - Real Estate Digital LLC | 768 | — | 3 |
| AS3944US | PARTAN-LAB - Partan & Partan | 768 | — | 3 |
| AS395823US | DOOF - doof.net | 768 | 4.1K | 6 |
| AS401233US | ALLIANCE-BROADBAND - Alliance Broadband | 768 | — | 2 |
| AS12131US | VC-AS-02 - Vertical Computers | 768 | 131.1K | 5 |
| AS400566US | POWERSERG - PowerSerg Data Systems Inc | 768 | 4.1K | 4 |
| AS26151US | ARTHREXINC - Arthrex Inc. | 768 | — | 3 |
| AS402156US | CLOUDLOGICS-1 - CloudLogics LLC | 768 | — | 3 |