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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS22131US | RFN-FIBER - Reach Fiber Network, LLC | 256 | 65.5K | 2 |
| AS395641US | USCB-01 - USCB Inc | 256 | — | 1 |
| AS46908US | COMVOZ-US - Comvoz Communication LLC | 256 | — | 1 |
| AS13655US | AXXESS-NETWORKS - Axxess Networks LLC | 256 | — | 1 |
| AS396093US | BRS-AS-124 - Big River Steel, LLC | 256 | — | 1 |
| AS32293US | TCW-AS-865 - The TCW Group, Inc. | 256 | — | 1 |
| AS54158US | SAG-NYC-1 - Selendy & Gay PLLC | 256 | — | 1 |
| AS22980US | APOGEE-TELECOM-RESERVED - Apogee Telecom Inc. | 256 | — | 1 |
| AS397761US | CISD-ASNNUMBER-01 - CORSICANA ISD | 256 | — | 1 |
| AS398359US | FNU-VERSAILLES - Frontier Nursing University | 256 | — | 1 |
| AS40275US | SECURITYMETRICS - SecurityMetrics, Inc. | 256 | — | 1 |
| AS396382US | TBLNET1 - TBL Networks, Inc. | 256 | — | 1 |
| AS402399US | IRON - IRONHOSTING | 256 | — | 1 |
| AS36717US | PRO-EMS - Professional Ambulance & Oxygen Service, Inc. | 256 | — | 1 |
| AS18743US | EVERENCE-SERVICES-LLC - MENNONITE MUTUAL AID | 256 | — | 1 |
| AS16897US | RSI-AUS - Renaissance Systems, Inc. | 256 | — | 1 |
| AS31870US | ASN-BELL3 - Bell Bank | 256 | — | 1 |
| AS32635US | CITYOFCLOVIS - City of Clovis | 256 | — | 1 |
| AS394441US | MIRANTIS-US - Mirantis | 256 | — | 1 |
| AS401024US | COMMUNICATIONSAUTHORITY - Communications Authority, INC | 256 | 256 | 2 |
| AS33278US | NSLC-ORG - National Student Clearinghouse | 256 | — | 1 |
| AS396242US | ECOM - Tiffany and Company | 256 | — | 1 |
| AS55152US | IFCJAS-01 - The Fellowship | 256 | — | 1 |
| AS54530US | SPRINGFIELD-PUBLIC-SCHOOL-MA - Springfield Public Schools | 256 | 256 | 2 |
| AS11407US | CPSD6 - Central Point School District 6 | 256 | — | 1 |
| AS40644US | IFS - Integra Financial Services, LLC | 256 | — | 1 |
| AS14471US | AUTOMATED-MEDIA-INC - Automated Media, Inc. | 256 | — | 1 |
| AS1615US | EXEL - Exelixis Inc. | 256 | — | 1 |
| AS33469US | EDMUNDS-ASN - EDMUNDS.COM | 256 | — | 1 |
| AS394852US | ASN-AWC - Arizona Water Company | 256 | — | 1 |
| AS63352US | HABOTA-DNS - Habota | 256 | — | 1 |
| AS394152US | L3-DS - L Cube Strategic Support Services LLC | 256 | — | 1 |
| AS400491US | PCEWEST - PCE Systems | 256 | — | 1 |
| AS400297US | XAI - X.AI | 256 | — | 1 |
| AS401214US | HANSEN-LABS - Jacob Hansen, Sole Proprietorship | 256 | 1 | 2 |
| AS13610US | PROVOCRAFT-NOVELTY - Provo Craft & Novelty, Inc. | 256 | — | 1 |
| AS397927US | GPB-HQ-01 - Georgia Public Broadcasting | 256 | — | 1 |
| AS32942US | SCMASN - Sandler Capital Management | 256 | — | 1 |
| AS400946US | AMI-PROD-00121 - AMI Entertainment LLC | 256 | — | 1 |
| AS33311US | NET-TOPCON - TOPCON POSITIONING SYSTEMS INC | 256 | — | 1 |
| AS47078US | HEARTLAND-HEALTH - Heartland Regional Medical Center | 256 | — | 1 |
| AS396102US | JACKSONVILLE - Formativ Health | 256 | — | 1 |
| AS32171US | TRIAN-FUND-MANAGEMENT-LP - Trian Fund Management L.P. | 256 | — | 1 |
| AS32763US | BS32BJB-HF - Building Service 32BJ Benefit Funds | 256 | — | 1 |
| AS46855US | WHYFLY - WhyFly | 256 | — | 1 |
| AS1055US | CITY-OF-MANTECA-CALIFORNIA - City of Manteca | 256 | — | 1 |