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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 |
| 1.5K |
| 1 |
| 7 |
| AS36242US | BEEKS-AS-2 - Network Foundations LLC | 1.5K | — | 6 |
| AS22803US | NOV-AS - National Oilwell Varco, Inc. | 1.5K | — | 6 |
| AS22344US | ABC-SUPPLY-CO - ABC Supply Co. | 1.5K | — | 5 |
| AS27307US | NABORS - Nabors Corporate Services, Inc. | 1.5K | — | 6 |
| AS14255US | AS-USD - University of San Diego | 1.5K | — | 6 |
| AS62490US | COMINTECH - Comintech Corp | 1.5K | — | 6 |
| AS2030US | TBCASN2 - The Boeing Company | 1.5K | — | 3 |
| AS62630US | AS62630 - Husson University | 1.5K | — | 2 |
| AS33476US | AS33476-TRADE-12 - SS&C Technologies, Inc. | 1.5K | — | 5 |
| AS26679US | HELIACAL - Heliacal Networks | 1.5K | 18 | 6 |
| AS401204US | RFIH-NET-06 - Retail Finance International Holdings, Inc. | 1.5K | 1 | 5 |
| AS40458US | CMIGNET - CMFG Life Insurance Company | 1.5K | — | 6 |
| AS36695US | REGION-5-EDUCATION-SERVICE-CENTER - Region 5 Education Service Center | 1.5K | 65.5K | 7 |
| AS36263US | AWS-EVENTS - Amazon.com, Inc. | 1.5K | 576 | 12 |
| AS26524US | BUDCO - BUDCO | 1.5K | — | 5 |
| AS398998US | MAVERIX - Maverix LLC | 1.5K | 8.2K | 8 |
| AS23371US | CAEUS-AS - CAE USA, Inc | 1.5K | — | 6 |
| AS18742US | ON24-SAC - ON24, Inc. | 1.5K | — | 3 |
| AS393564US | WSU-SPO-AS - Washington State University | 1.5K | — | 3 |
| AS19572US | OMEGASYS-HQ - Omega Systems Consultants, LLC | 1.5K | — | 3 |
| AS50069US | MISAKA-ANYCAST Misaka Network, Inc. | 1.5K | 10 | 16 |
| AS398876US | RVIT-7TRIBES - Round Valley Indian Tribes | 1.5K | — | 2 |
| AS19867US | VOODOO1 - Voodoo.com, Inc | 1.5K | — | 6 |
| AS397348US | UE-1 - University of Evansville | 1.5K | — | 6 |
| AS15005US | CIRCLE-B - Circle B Wireless | 1.5K | 256 | 6 |
| AS40321US | ESB - Emigrant Bank | 1.5K | — | 3 |
| AS6475US | KESMAI - Kesmai Corporation | 1.5K | — | 6 |
| AS46246US | RAPTOR-DC-01 - Raptor Engineering, LLC | 1.5K | 4.1K | 5 |
| AS11483US | CONVIVA-AS - Conviva, Inc. | 1.5K | 3 | 9 |
| AS6231US | SCANA - Dominion Virginia Power | 1.5K | — | 6 |
| AS53698US | NINJA-IX-TRANSIT-CONNECTION - Ninja-IX Corporation | 1.5K | 30 | 21 |
| AS20251US | SOLARWINDSAUSTIN - SolarWinds North America, Inc. | 1.5K | 5 | 11 |
| AS62582US | MJMTELECOM - Accel Wireless | 1.5K | — | 3 |
| AS21945US | HARLANDCLARKE-AS - Harland Clarke Corp. | 1.5K | — | 5 |
| AS400799US | PUFFERFISH-STUDIOS - Pufferfish Studios LLC | 1.5K | 8 | 8 |
| AS25771US | MAXIM-60 - PSI/Maximus | 1.5K | — | 4 |
| AS7014US | XO-AS7014 - Verizon Business | 1.5K | — | 6 |
| AS13820US | VACARES - Vacares LLC | 1.5K | 1 | 7 |
| AS46734US | GSENA1 - GDF Suez Energy North America, INC | 1.5K | — | 2 |
| AS13496US | BELCAN - Belcan Corporation | 1.5K | — | 5 |
| AS394109US | CFH - CFH CABLE INC | 1.5K | 589.8K | 8 |
| AS400537US | AS-CHI-AURORA - Morningstar, Inc. | 1.5K | — | 4 |
| AS19462US | USSCO-AS19462 - Essendant Co. | 1.5K | — | 4 |
| AS18447US | AFFINITY-INTER - Ntirety, Inc. | 1.5K | — | 6 |
| AS54603US | WEGMANS-FM - Wegmans Food Markets, Inc. | 1.5K | — | 4 |
| AS12153US | HBI-ASN1 - HBI Branded Apparel Enterprises, LLC | 1.5K | — | 6 |