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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 |
| 1K |
| — |
| 4 |
| AS401375US | NYECOM-NET - Nyecom Teleservices | 1K | — | 1 |
| AS40757US | MMG - MMG Insurance Company | 1K | — | 1 |
| AS393283US | UNIVAR SOLUTIONS - Univar Solutions LLC | 1K | — | 4 |
| AS11898US | TRTS - TRUNO Retail Technology Solutions | 1K | — | 4 |
| AS394280US | INTEGRATED-NETWORK-CONCEPTS - Integrated Network Concepts | 1K | — | 2 |
| AS63185US | IQVIA-ATLANTA - IQVIA Holdings Inc | 1K | — | 4 |
| AS46670US | MARKETING-ASSOCIATES-LLC - MARKETING ASSOCIATES, LLC | 1K | — | 4 |
| AS399651US | TBBK-USCOLO01 - The Bancorp Incorporated | 1K | — | 4 |
| AS40031US | SATCOM-SYSTEMS-ASN - Satcom Systems Incorporated | 1K | — | 1 |
| AS396239US | CMW-WIRELESS-1 - CMW Wireless LLC | 1K | — | 1 |
| AS401801US | ILSOS - Illinois Secretary of State | 1K | — | 1 |
| AS11684US | JCDH - Jefferson County Department of Health | 1K | — | 1 |
| AS31977US | FECRWY-1 - Florida East Coast Railway LLC | 1K | — | 4 |
| AS40936US | ACCS-21 - Alabama Community College System | 1K | — | 3 |
| AS46721US | SKYNET-COUNTRY - Skynet Country INC | 1K | — | 2 |
| AS23444US | TESTAMERICA - TestAmerica Laboratories, Inc. | 1K | — | 4 |
| AS20035US | AS-BBI - Broadway National Bank | 1K | — | 4 |
| AS36428US | CYBERTIME-NETWORK-COMMUNICATIONS - Cybertime Network Communications | 1K | — | 4 |
| AS1436US | HACKENSACK-MERIDIAN-HEALTH - Meridian Health System | 1K | — | 1 |
| AS22265US | GENESIS-OMAHA-NE - GENESIS SYSTEMS, LLC | 1K | — | 1 |
| AS27169US | RYAN-AS - Ryan, LLC | 1K | — | 1 |
| AS400848US | DHI9PUT - DHI TECHNICAL SERVICES LLC | 1K | 256 | 3 |
| AS210781US | BRAINPS-AS Brain PEACE Science Foundation, Inc. | 1K | — | 3 |
| AS401673US | BRTEL-USAS1 - Bullroar Telecom, Ltd. | 1K | 4.6K | 7 |
| AS18478US | NATAL-MED - Mednax Services, Inc. | 1K | — | 4 |
| AS46575US | WSSC-AS - Washington Suburban Sanitary Commission | 1K | — | 3 |
| AS14712US | AS-ONESC - One Step Consulting, Inc. | 1K | — | 1 |
| AS40346US | ACADIAN-AMBULANCE-SERVICE - Acadian Ambulance Service, Inc. | 1K | — | 4 |
| AS22081US | CITILAB - Citigroup Inc. | 1K | — | 4 |
| AS11982US | SHWISP - Sandhills Wireless, LLC | 1K | — | 1 |
| AS26341US | CORELIGHTNET-CLOUD - Corelight, Inc. | 1K | 1 | 5 |
| AS54375US | CENTRE-COLLEGE - Centre College | 1K | — | 3 |
| AS23766US | EA-SG-AP - Electronic Arts, Singapore | 1K | — | 1 |
| AS53658US | SOCKETLABS - SocketLabs | 1K | — | 1 |
| AS54271US | MECHANICS - Mechanics Bank | 1K | — | 3 |
| AS18865US | AS-INTUIX - Intuix LLC | 1K | 3 | 7 |
| AS18538US | WCPSS-BOE - Wake County Public School System | 1K | — | 1 |
| AS10359US | EPICSYS - Epic Systems Corporation | 1K | 1 | 2 |
| AS396507US | EMERALD-ONION - Emerald Onion | 1K | 4.1K | 7 |
| AS19934US | UBER-FREIGHT - Uber Freight US LLC | 1K | — | 4 |
| AS32525US | UNDER-ARMOUR-PERFORMANCE-APPAREL - Under Armour, Inc. | 1K | — | 3 |
| AS19458US | GLOBALSTAR-1 - Globalstar, Inc. | 1K | — | 4 |
| AS402304US | CALCAS-PID - California Casualty Management Company | 1K | — | 1 |
| AS400446US | CITIZENSBANK - The Citizens Bank | 1K | 4.1K | 4 |
| AS394545US | WRIKE-AS - Wrike, Inc. | 1K | — | 4 |
| AS46789US | LINEA-MEX - Linea Mex, LLC. | 1K | 16 | 4 |