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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 512 |
| — |
| 2 |
| AS400808US | SALTWATERSCUBA-ASN - Saltwater Scuba, LLC | 512 | — | 2 |
| AS397146US | FARMCREDIT-MIDAMERICA - Farm Credit Mid-America | 512 | — | 2 |
| AS393725US | VALENCEHEALTH - Valence Health, Inc. | 512 | — | 2 |
| AS65US | AF-RASN-65 - Air Force Systems Networking | 512 | — | 2 |
| AS218631US | EnderHost EnderHost LLC | 512 | 1 | 3 |
| AS5728US | WORLDNET1 - AT&T Enterprises, LLC | 512 | — | 1 |
| AS17033US | CSL-ASN-AS17033 - CSL Behring L.L.C | 512 | — | 2 |
| AS402487US | HOSTCRAM - HostCram | 512 | — | 2 |
| AS394558US | SUNOVION - Sumitomo Pharma America, Inc. | 384 | — | 2 |
| AS36708US | ILSHEALTH-01 - ILS Health | 320 | — | 2 |
| AS32822US | TEAMUCC - C.O.P.S. Monitoring | 288 | — | 2 |
| AS395054US | CDPHP - CDPHP | 288 | — | 2 |
| AS7019US | NTTA-7019 - NTT America, Inc. | 288 | 2 | 4 |
| AS21639US | BCBSLA-ASN - Blue Cross Blue Shield Of Louisiana | 264 | — | 2 |
| AS401494US | FUTURECONNECTNETWORK - futureConect LLC | 264 | — | 2 |
| AS1407US | QUOTEMEDIA - Quotemedia | 264 | — | 2 |
| AS11936US | MARATHON-CHEESE - Marathon Cheese Corporation | 256 | — | 1 |
| AS54410US | BDHS-AS - Bozeman Deaconess Health Services | 256 | — | 1 |
| AS395277US | ST-LUKES-HOSPITAL - Aspirus, Inc. | 256 | — | 1 |
| AS40914US | PENSKE-TRUCK-ASN - Penske Truck Leasing Co., L.P. | 256 | — | 1 |
| AS30601US | LOBEL-FINANCIAL-CORPORATION - Lobel Financial Corporation | 256 | — | 1 |
| AS29931US | ACE-002 - Ace Data Centers II, L.L.C. | 256 | — | 1 |
| AS1617US | JLEM - Jacobs Levy Equity Management, Inc. | 256 | 1 | 2 |
| AS14479US | OG-ASN-01 - The Oneida Group Inc. | 256 | — | 1 |
| AS396992US | LCTCS-BRHQ - LOUISIANA COMMUNITY AND TECHNICAL COLLEGE SYSTEM | 256 | — | 1 |
| AS53413US | PRCC - Pearl River Community College | 256 | — | 1 |
| AS46190US | KRMC - Kingman Regional Medical Center | 256 | — | 1 |
| AS398558US | EASTMS-MISSON-01 - East Mississippi Community College | 256 | — | 1 |
| AS62866US | OHIO-IX-OPS - OHIO IX | 256 | 4.1K | 2 |
| AS395164US | NORTHERNLIGHT - Northern Light Single Point LLC | 256 | — | 1 |
| AS54815US | TSI-SEMICONDUCTORS - TSI SEMICONDUCTORS | 256 | — | 1 |
| AS36535US | HUDSON-RIVER-TRADING-LLC-36535 - Hudson River Trading LLC | 256 | — | 1 |
| AS394768US | LTS-IL01 - Links Technology Solutions, Inc. | 256 | — | 1 |
| AS210655US | LaCrette Brian LaCrette | 256 | 1 | 2 |
| AS54205US | STARWOOD-STAMFORD - Marriott International, Inc. | 256 | — | 1 |
| AS8164US | JUNO - Juno Online Services, L.P. | 256 | — | 1 |
| AS846US | SOLV-OCC-01 - SOLV Energy, LLC | 256 | — | 1 |
| AS53288US | STERICYCLE - STERICYCLE, INC. | 256 | — | 1 |
| AS14452US | CMA-USA - CMA, Inc. | 256 | — | 1 |
| AS62690US | LAMPO-AS - Ramsey Solutions | 256 | — | 1 |
| AS54940US | BFS-49-54940 - Broadridge Financial Solutions, Inc. | 256 | — | 1 |
| AS32253US | BECPL - Buffalo & Erie County Public Library | 256 | — | 1 |
| AS11674US | HAAS-TCM-001 - Haas Group International, LLC | 256 | — | 1 |
| AS402976US | BLUE-CLOUD - Robeing | 256 | — | 1 |
| AS35880US | WFC-CISD-INET - Wakefern Food Corp. | 256 | — | 1 |
| AS397060US | VIN-01 - Veterinary Information Network, Inc. | 256 | — | 1 |