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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. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| JCPN-AS - JEFFERSON COUNTY PUD NO. 1 |
| 768 |
| — |
| 2 |
| AS6475US | KESMAI - Kesmai Corporation | 768 | — | 3 |
| AS46984US | CPF-AS - Charlotte Pipe and Foundry Company | 768 | — | 3 |
| AS14121US | CIBC-WORLD-MARKETS - CIBC World Markets | 768 | — | 3 |
| AS32297US | TEPASN - Tucson Electric Power | 768 | — | 3 |
| AS53951US | GLMX-AS - GLMX, LLC | 768 | — | 3 |
| AS26325US | TECHCU-AS - Technology Credit Union | 768 | — | 3 |
| AS16565US | FIRST-HAWAIIAN-BANK - First Hawaiian Bank | 768 | — | 3 |
| AS11066US | XPO LOGISTICS - XPO LOGISTICS INC | 768 | — | 3 |
| AS393320US | FORTY-NINERS-ASN-2024 - Forty Niners Holdings LP | 768 | — | 3 |
| AS7988US | CENTURYLINK-SPA-SINGAPORE - CenturyLink Communications, LLC | 768 | — | 2 |
| AS17244US | MCNEESE - McNeese State University | 768 | — | 3 |
| AS11739US | CHIRISA-TECHNOLOGY-PARKS-01 - Digital Fortress, Inc. | 768 | — | 3 |
| AS53722US | SSSASN - Social & Scientific Systems, Inc. | 768 | 3 | 6 |
| AS16711US | EHI-NA-AS-2 - Enterprise Holdings, Inc. | 768 | 2 | 5 |
| AS397417US | SCWA - Suffolk County Water Authority | 768 | — | 2 |
| AS10721US | THEAN8 - The Andersons Inc | 768 | — | 3 |
| AS396202US | PBXI - PBXi | 768 | — | 3 |
| AS395788US | KELLOGGCO - Kellogg Company | 768 | — | 3 |
| AS30532US | 3310-617INTERNET - Healthcare Realty Trust, Inc. | 768 | — | 3 |
| AS393707US | ABM-IND - ABM Industries | 768 | — | 3 |
| AS400260US | OLSON-NETWORK - Olson Tech, LLC | 768 | 256 | 3 |
| AS137220US | TII-AS-SG - Texas Instruments, Inc | 768 | — | 3 |
| AS23514US | QUANTLAB - QUANTLAB FINANCIAL LLC | 768 | — | 3 |
| AS142561US | XTDEF-LIMITED-AS-AP - XTDEF Limited | 768 | 8 | 11 |
| AS399450US | ADVANCIAL-ASN01 - ADVANCIAL FEDERAL CREDIT UNION | 704 | — | 4 |
| AS396155US | COA - City of Arlington | 640 | — | 3 |
| AS23459US | APPLEBEE-NETWORKS - applebee | 640 | 3 | 6 |
| AS53719US | MAINSTREAM-TECHNOLOGIES-LRDC - Mainstream Technologies, Inc. | 640 | — | 3 |
| AS25895US | HART-AS1 - HART | 576 | — | 4 |
| AS18718US | MARVELL - Marvell Semiconductor Inc. | 576 | — | 4 |
| AS395351US | AG-1 - Advisor Group, Inc. | 544 | — | 3 |
| AS11317US | GPN - Great Plains Network | 544 | 64 | 3 |
| AS14252US | SCHOOLSPECIALTY - School Specialty, Inc. | 544 | — | 3 |
| AS26812US | ROTARY-INTERNATIONAL - Rotary International | 528 | — | 3 |
| AS396049US | EDNETICS - Ednetics, Inc. | 513 | 4.1K | 10 |
| AS15262US | TSYS-NDC-COPORATE-INTERNET - Global Payments Inc. | 512 | — | 2 |
| AS54747US | UTASC - UMPQUA BANK | 512 | — | 2 |
| AS32605US | BRAVESOFT-AS - BraveSoftTech Inc | 512 | — | 2 |
| AS393383US | SISD-ASN - Spring Independent School District | 512 | — | 2 |
| AS396456US | THEMAC-1891 - Multnomah Athletic Club | 512 | — | 2 |
| AS27600US | VHC-ARLINGTON - Virginia Hospital Center | 512 | — | 2 |
| AS401672US | MRI-SOFTWARE-01 - MRI Software | 512 | — | 2 |
| AS40334US | TGNA-KENS - TEGNA Inc. | 512 | — | 2 |
| AS33492US | AS33492 - EvergreenHealth | 512 | — | 1 |
| AS30425US | UTA-1 - Utah Transit Authority | 512 | — | 1 |
| AS55208US | NAVITUS - Navitus Health Solutions, LLC | 512 | — | 2 |