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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 |
| 1.8K |
| 4.1K |
| 8 |
| AS53550US | AS53550 - NTT Cloud Communications US, Inc. | 1.8K | 65.5K | 5 |
| AS26239US | ATLASAIR - Atlas Air, Inc. | 1.8K | — | 4 |
| AS396417US | SFDC-IT - Salesforce, Inc. | 1.8K | 1 | 5 |
| AS19755US | CRUISE-NETENG-ASN - Cruise LLC | 1.8K | — | 7 |
| AS394562US | STRIPE2 - Stripe, Inc. | 1.8K | — | 7 |
| AS11159US | LAPL-LAPUBLICLIBRARY - Los Angeles Public Library | 1.8K | — | 7 |
| AS33328US | NORTON-HEALTHCARE - Norton Healthcare | 1.8K | — | 7 |
| AS20368US | SMART-CITY-INCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.8K | — | 3 |
| AS401586US | SQUIRREL - Squirrel Networks LLC | 1.8K | — | 4 |
| AS14467US | KUA-NET - KUA.net | 1.8K | — | 4 |
| AS55253US | CAA-55253 - Creative Artists Agency, LLC | 1.8K | — | 7 |
| AS396480US | MEADOWRIDGE-NETWORKS - Meadowridge Networks, Inc. | 1.8K | 8.2K | 6 |
| AS393827US | BJWC - BJS WHOLESALE CLUB | 1.8K | — | 6 |
| AS393536US | NTTDATA-RAGINGWIRE - NTT DATA AMERICAS, INC | 1.9K | — | 10 |
| AS10322US | ERCOT-ISO - Ercot Independent System Operations | 2K | — | 5 |
| AS400287US | TEAMPHARR-ASN - City of Pharr TX | 2K | 65.5K | 2 |
| AS400251US | AS-ONEIDATEL - Oneida Telephone Exchange | 2K | — | 5 |
| AS53591US | YTELL - Ytel, Inc. | 2K | 81.9K | 4 |
| AS22883US | CONDENAST - CondeNast Publications | 2K | — | 8 |
| AS10599US | MCKESSON - McKesson Corp. | 2K | — | 8 |
| AS11656US | MMO-17-44144 - Medical Mutual | 2K | — | 8 |
| AS395267US | LSC-COMMUNICATIONS - LSC Communications | 2K | — | 8 |
| AS14228US | NEW-DULCINA-AGRIDATA - New Dulcina Agridata LLC | 2K | — | 5 |
| AS3060US | SC-YORKTECH - York Technical College | 2K | — | 1 |
| AS40089US | BULLHORN-INC-BOSTON - Bullhorn Inc. | 2K | — | 8 |
| AS64276US | CLEVELAND-UTILITIES-FIBER - Cleveland Utilities Authority | 2K | — | 1 |
| AS16681US | ETS - Educational Testing Service | 2K | — | 8 |
| AS54886US | ROCKETAS - ROCKET SOFTWARE INC | 2K | — | 2 |
| AS18682US | AAMU-INTERNET - Alabama A&M University | 2K | — | 5 |
| AS18551US | ROTHINC - Rothschild & Co US Inc. | 2K | — | 2 |
| AS402413US | BURST - BURSTX | 2K | — | 1 |
| AS32077US | ULTISOFTASN - ULTIMATE SOFTWARE GROUP | 2K | — | 3 |
| AS401674US | HUB-ASN-01 - Harriman Utility Board | 2K | 65.5K | 2 |
| AS397405US | LINCOLN-ELECTRIC-SYSTEM - Lincoln Electric System | 2K | — | 1 |
| AS32595US | LIBERALLY-INTERNATIONAL - Liberally Network, LLC | 2K | 260 | 9 |
| AS54392US | DECATURTELCO - Decatur Telephone Company | 2K | — | 6 |
| AS22648US | SWG - Southwest Gas Corporation | 2K | — | 2 |
| AS54097US | AS-CCTTE - CCT Telecommunications, Inc. | 2K | 65.5K | 2 |
| AS1643US | BROC-11-ASN - Brockway Television Inc. | 2K | — | 1 |
| AS21576US | IL-853-21576 - insiteOne | 2K | — | 8 |
| AS397911US | WIFISQUARED - Wifi Squared | 2K | — | 6 |
| AS8038US | 6CONNECT - 6connect, Inc. | 2K | 16.4K | 15 |
| AS33116US | ASN-WASH-CO-VA-SCHOOLS - Washington County Schools | 2K | — | 5 |
| AS30115US | CARRIERX-LA-01 - FreeConferenceCall.com | 2K | — | 6 |
| AS36745US | CALERES-INC - Caleres, Inc. | 2K | — | 8 |
| AS394660US | NORVADO-NE - Chequamegon Communications Cooperative, Inc. | 2K | — | 2 |