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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 |
| AS398837US | HOPE - Hope Enterprise Corporation | 512 | 257 | 4 |
| AS63249US | RSFH - Roper Saint Francis Healthcare | 512 | — | 2 |
| AS19251US | NEPGROUPINC - NEP Group, Inc. | 512 | — | 2 |
| AS33402US | BULLITT-COMMUNICATIONS - Bullitt Communications | 512 | 4.1K | 2 |
| AS62520US | EMASON-ASN - eMASON, Inc | 512 | — | 2 |
| AS394770US | AXIGENT-TECHNOLOGIES-GROUP - Axigent Technologies Group, Inc. | 512 | 65.5K | 3 |
| AS205781US | HostZen HostZen LLC | 512 | — | 2 |
| AS29921US | SAIFCO - State Accident Insurance Fund Corporation | 512 | 3 | 5 |
| AS25762US | BOCUSA - Bank of China | 512 | — | 2 |
| AS36171US | STRASMORE - Strasmore, Inc. | 512 | 1 | 3 |
| AS397012US | OXYAHGC-01 - oXya Corporation | 512 | — | 1 |
| AS32470US | RFIH-NET4 - Retail Finance International Holdings, Inc. | 512 | 1 | 3 |
| AS13725US | NOBULL-NETWORKS - Nobull Networks LLC | 512 | 2 | 3 |
| AS393555US | MOIT - City of Baltimore, Mayor's Office of Information Technology | 512 | — | 2 |
| AS398670US | E-NETWORKS - Takk LLC | 512 | — | 2 |
| AS33411US | BRIGHTPATTERNSC - Bright Pattern, Inc | 512 | — | 2 |
| AS401183US | STEGEMEYER-NET - James Stegemeyer, Sole Proprietorship | 512 | 16 | 3 |
| AS398459US | ROGUECU-ORG-01 - Rogue Credit Union | 512 | — | 2 |
| AS394064US | AECI - Associated Electric Cooperative, Inc. | 512 | — | 2 |
| AS32887US | GEHA - GEHA | 512 | — | 2 |
| AS25729US | CITY-OF-IRVING - City of Irving | 512 | — | 2 |
| AS395586US | KIRKLAND-ELLIS-MI - Kirkland & Ellis LLP | 512 | — | 2 |
| AS18533US | AAAWA-3605 - AAA Washington | 512 | — | 1 |
| AS55181US | KEUKA-COLLEGE - Keuka College | 512 | — | 2 |
| AS18971US | BCUS - BARCLAYS FINANCIAL CORP. | 512 | — | 2 |
| AS40044US | BRONSON-HEALTHCARE-GROUP-INC - Bronson Healthcare Group, Inc. | 512 | — | 1 |
| AS4361US | VERSATURE-NET2PHONE - IDT Corporation | 512 | — | 2 |
| AS400034US | CIRHLD - Circuit Holdings | 512 | — | 2 |
| AS5329US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS400555US | ISOGRAM - Isogram, LLC | 512 | 65.5K | 3 |
| AS401847US | 321-WLCS-ASN - 321 Communications, Inc. | 512 | 2 | 4 |
| AS395130US | DAY-PITNEY-LLP - Day Pitney LLP | 512 | — | 2 |
| AS397140US | ANB-NET - Amarillo National Bank | 512 | — | 2 |
| AS401460US | METROPLUS-HEALTH - METROPLUS HEALTH PLAN, INC. | 512 | — | 2 |
| AS394880US | VITALEDGE - e-Emphasys Technologies Inc | 512 | — | 2 |
| AS30484US | PAHOUSEGOP - Pennsylvania House of Representatives, Republican IT Services | 512 | — | 2 |
| AS401552US | EUC - Example User Content, LLC | 512 | — | 2 |
| AS20373US | MARLEYINDEX-US - Marley Index, LLC | 512 | 3 | 5 |
| AS46139US | METASOURCE - Metasource LLC | 512 | — | 2 |
| AS18459US | UAIC-INTERNET - UNITED AUTOMOBILE INSURANCE | 512 | — | 2 |
| AS35864US | APUS-5 - American Public University System | 512 | — | 2 |
| AS53451US | NETX-INTERNET - NetX Internet, LLC. | 512 | — | 2 |
| AS399828US | COKER-CAMPUS-01 - Coker University | 512 | — | 1 |
| AS64279US | TFSLAOC - Third Federal Savings and Loan Association of Cleveland | 512 | — | 2 |
| AS40178US | OCEANBLUE-CLOUD-US - OCEANBLUE CLOUD, INC. | 512 | — | 2 |
| AS33482US | ASN-CARDTRONICS - CARDTRONICS USA INC | 512 | — | 2 |