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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. | 211.1M | 21,138 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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 | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,417 |
| 256 |
| — |
| 1 |
| AS16827US | LAWTONIS - Lawton Information Services, LLC | 256 | — | 1 |
| AS399263US | RISE-CONNECT-01 - Rise Commercial District | 256 | — | 1 |
| AS63380US | TRILLIUM-STAFFING - Trillium Staffing | 256 | — | 1 |
| AS27242US | ATI-LAX - AMERICANTOURS INTERNATIONAL INC. | 256 | — | 1 |
| AS11462US | ARAMARK-CA-TORHQ - ARAMARK | 256 | — | 1 |
| AS4361US | VERSATURE-NET2PHONE - IDT Corporation | 256 | — | 1 |
| AS54076US | NAVEX-IT-HOSTING - NAVEX Global, inc | 256 | — | 1 |
| AS398265US | NORDAM-GROUP-01 - The Nordam Group LLC | 256 | — | 1 |
| AS13359US | LEARN-CACHING-PEERING - LEARN | 256 | 1 | 2 |
| AS18453US | WELLBORN-CABINET - Wellborn Cabinet Inc. | 256 | — | 1 |
| AS13850US | FRACTALCORE - FractalCore LLC | 256 | — | 1 |
| AS396488US | PHYSICIANSMUTUAL-ASN-1 - Physicians Mutual Insurance Company | 256 | — | 1 |
| AS46859US | MBT-COM - MBTC | 256 | — | 1 |
| AS11965US | COA-NET - City of Aspen | 256 | — | 1 |
| AS399882US | WORKPLACEOPTIONS-ASN-01 - WORKPLACE OPTIONS, LLC | 256 | — | 1 |
| AS54091US | WWMCASN - White Wilson Medical Center, P.A. | 256 | — | 1 |
| AS46904US | WEITZ-LUX - Weitz & Luxenberg P.C | 256 | — | 1 |
| AS33095US | MAYER-NETWORKS - Mayer Networks Inc | 256 | — | 1 |
| AS26289US | SOUTHSIDE-BANCSHARES-INC - Southside Bancshares, Inc. | 256 | — | 1 |
| AS54124US | TRAVELINC-NSC - TRAVEL INCORPORATED | 256 | — | 1 |
| AS205781US | HostZen HostZen LLC | 256 | — | 1 |
| AS54898US | CITY-OF-SAN-BUENAVENTURA - City of San Buenaventura | 256 | — | 1 |
| AS400311US | IRN - EDISON PROPERTIES, LLC | 256 | — | 1 |
| AS395967US | WIDEPENNET - WON Communications, LLC | 256 | 16.4K | 2 |
| AS29403US | VERISIGN-AS VeriSign Inc. | 256 | — | 1 |
| AS29790US | NEW-LIBERTY-HOSPITAL - New Liberty Hospital District of Clay County, Missouri | 256 | — | 1 |
| AS62725US | CITYOFCENTENNIALCOLORADO - City of Centennial | 256 | — | 1 |
| AS18521US | AMERICAN-CAMPUS-COMMUNITIES - American Campus Communities, Inc | 256 | — | 1 |
| AS14478US | RECURSE-CENTER - Recurse Center | 256 | 2 | 3 |
| AS63365US | TWCS - Time Warner Cable Sports Inc | 256 | — | 1 |
| AS398131US | LUCASFILM-LA - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS400707US | MMH-01 - Melissa Memorial Hospital | 256 | — | 1 |
| AS53799US | NAHB1201 - NAHB | 256 | — | 1 |
| AS18724US | BHR - Blue Hills Regional Vocational Technical School | 256 | — | 1 |
| AS197867US | WONG-AS FELIX WONG TRADING AS FANTASTIC HOMEWARE USA CO | 256 | 256 | 2 |
| AS398289US | JKNIPPER-ASN-01 - J. KNIPPER AND COMPANY, INC. | 256 | — | 1 |
| AS401978US | INTREPID-NETWORK-GROUP - Intrepid Network Group | 256 | 4.1K | 2 |
| AS54999US | TENARIS-NA - Tenaris Global Services (USA) Corp. | 256 | — | 1 |
| AS46264US | NIKE-WHQ - Nike, Inc. | 256 | — | 1 |
| AS30267US | CITY-WACO-01 - City of Waco | 256 | — | 1 |
| AS397917US | AKINT-AM-ASN - Asahi Kasei America Inc. | 256 | — | 1 |
| AS397777US | TORANI-AS - Torani | 256 | — | 1 |
| AS398745US | WPCAREY - WPC | 256 | — | 1 |
| AS13722US | DEFAULTROUTE - Default Route, LLC | 256 | 65.5K | 2 |
| AS21609US | SENTINEL-BENEFITS-GROUP - Sentinel Benefits Group, INC | 256 | — | 1 |
| AS400257US | CITY-OF-ROCKLIN-AS-01 - City of Rocklin | 256 | — | 1 |