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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 |
| 256 |
| — |
| 1 |
| AS397981US | FIRSTECH-INC - Firstech, Inc. | 256 | — | 1 |
| AS397567US | ALERA-GROUP - Alera Group, Inc | 256 | — | 1 |
| AS394313US | NERDNET-10 - Nerd LLC | 256 | — | 1 |
| AS393762US | RSCSAS - Restaurant Supply Chain Solutions, LLC | 256 | — | 1 |
| AS27517US | RPS-AS - Rochester Public Schools | 256 | — | 1 |
| AS15340US | CVI-BORDER-1 - Community Vision, Inc. | 256 | — | 1 |
| AS26987US | COAHOMACC - Coahoma Community College | 256 | — | 1 |
| AS23322US | PSI-ASN-23322 - Print Mail Systems, Inc. | 256 | — | 1 |
| AS398243US | HE-US-01 - Holmes Electric Inc. | 256 | — | 1 |
| AS26064US | COFKM - City of Kings Mountain | 256 | — | 1 |
| AS393997US | REDCOATS - Red Coats, Inc | 256 | — | 1 |
| AS396242US | ECOM - Tiffany and Company | 256 | — | 1 |
| AS11586US | JOHNSON-OUTDOORS - Johnson Outdoors, Inc. | 256 | — | 1 |
| AS22259US | VITAMIX-001 - Vita-Mix Corporation | 256 | — | 1 |
| AS398112US | POET-ASN-01 - POET, LLC | 256 | — | 1 |
| AS395879US | CORPORATE-AS - Identity Group Holdings LLC | 256 | — | 1 |
| AS13509US | AS-SNCH-1 - Mount Sinai South Nassau | 256 | — | 1 |
| AS401929US | BANKAI - Bankai Group Inc | 256 | — | 1 |
| AS399848US | TELEPRO-01 - TelePro, Inc. | 256 | — | 1 |
| AS36717US | PRO-EMS - Professional Ambulance & Oxygen Service, Inc. | 256 | — | 1 |
| AS22042US | FLOWUSLLC - Flow Traders US LLC | 256 | — | 1 |
| AS393369US | RTVISION-ASN1 - RtVision, Inc. | 256 | — | 1 |
| AS395319US | AS-RIVERBAYCORP - Riverbay Corporation | 256 | — | 1 |
| AS400166US | CPC-COGENT-BLOCK - Cheyenne Propagation Company | 256 | — | 1 |
| AS53473US | BLOCKDC - Kinetic Web Solutions | 256 | — | 1 |
| AS46319US | AAM-ASN1 - American Axle and Manufacturing, Inc. | 256 | — | 1 |
| AS33418US | EQUITABLE-INTERNET-INITATIVE - Detroit Community Technology Project | 256 | — | 1 |
| AS401036US | FRIENDOWMENT - Friendowment, LLC | 256 | 257 | 3 |
| AS398800US | TOLE-TX-NET - Town of Little Elm | 256 | — | 1 |
| AS54515US | MRMC - Milford Regional Medical Center Inc. | 256 | — | 1 |
| AS54977US | MERITMEDICAL - Merit Medical Systems, Inc | 256 | — | 1 |
| AS19014US | NORCOM - NORCOM | 256 | 1 | 2 |
| AS402935US | CITY-OF-BELGRADE-MT - City | 256 | 1 | 2 |
| AS397436US | GRMC-ASN-PRIMARY - GUADALUPE REGIONAL MEDICAL CENTER | 256 | — | 1 |
| AS401667US | STG-PAASASN-01 - Scale Technology Group, Inc | 256 | — | 1 |
| AS21619US | GREYWOLF-CAPITAL - Greywolf Capital Management LP | 256 | — | 1 |
| AS29816US | SWA-MKT-INET-2 - Southwest Airlines Co. | 256 | — | 1 |
| AS393375US | BT-USMPL-MULTIHOME - Bio-Techne Corporation | 256 | — | 1 |
| AS7921US | ADTRAV - Adtrav Corporation | 256 | — | 1 |
| AS396415US | COMCAST-MES - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS398136US | GOAA-NET-1 - Greater Orlando Aviation Authority | 256 | — | 1 |
| AS33615US | EVHC - Envision Healthcare Holdings, Inc | 256 | — | 1 |
| AS398725US | NUSOCLOUD-NV - NUSO | 256 | — | 1 |
| AS40522US | SIMPLE1 - Simple Signal, Inc. | 256 | — | 1 |
| AS398469US | FOXTHERMAL-ASN - Fox Thermal Instruments Inc | 256 | — | 1 |
| AS14289US | CBTKS-AS - COREFIRST BANK & TRUST | 256 | — | 1 |