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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 2 |
| AS402091US | AYIT-01 - oknumbers inc | 512 | — | 2 |
| AS394493US | CDK-GLOBAL-HOSTING-FB - CDK Global, LLC | 512 | — | 2 |
| AS4966US | CASELLAWASTE - Casella Waste System Inc | 512 | — | 2 |
| AS54853US | MTL-371-54853 - Impact Internet | 512 | 65.5K | 3 |
| AS398795US | TALLWIRELESS - RFPT COMPANY LLC | 512 | 50 | 7 |
| AS402273US | INSTANTLY-AI - Instantly.ai | 512 | 65.5K | 2 |
| AS62996US | OMR-01 - Unwin Company | 512 | — | 1 |
| AS396976US | BYNUM-DR-01 - AOD Federal Credit Union | 512 | — | 2 |
| AS397607US | UIOWA-MIC-AS397607 - University of Iowa | 512 | — | 2 |
| AS53674US | KYVONAS-01 - SupportCloud, LLC | 512 | — | 2 |
| AS3727US | SHRUBB - Shrubbery Networks | 512 | — | 1 |
| AS397560US | 300-SAHARA - 300 West Sahara, LLC | 512 | — | 2 |
| AS18539US | DAYTON-SUPERIOR-MIAMISBURG - DAYTON SUPERIOR CORPORATION | 512 | — | 2 |
| AS396318US | CENTENNIALBANK-AR - Centennial Bank | 512 | — | 2 |
| AS26283US | SFCU-AS1 - SchoolsFirst Federal Credit Union | 512 | — | 2 |
| AS60653US | FEEDLY-DEVHD FEEDLY, INC. | 512 | — | 2 |
| AS64288US | MASONITE - Masonite Corporation | 512 | — | 2 |
| AS2021US | UNISYS-INT - Unisys Corporation | 512 | — | 2 |
| AS396098US | DOE-HANFORD - U.S. Department of Energy - Hanford | 512 | 65.5K | 3 |
| AS397292US | GIGABEAM-INTERNET - Symplified Technologies LLC | 512 | — | 1 |
| AS399066US | MMS-PUBLIC-AS01 - Massachusetts Medical Society | 512 | — | 2 |
| AS22874US | HIGH-DATA-CONNECTION - HIGH DATA CONNECTION LLC | 512 | — | 2 |
| AS22621US | UNIGROUP - UniGroup, INC | 512 | — | 2 |
| AS396041US | HFC-ASN - HollyFrontier Corporation | 512 | — | 2 |
| AS47094US | ITRON-6-47094 - Itron | 512 | — | 2 |
| AS46895US | CSGN - CSG Systems Inc. | 512 | — | 2 |
| AS10959US | BAC-NPC - Bank of America, National Association | 512 | — | 2 |
| AS400242US | SIEMENS-EDC-MIF - Siemens Corporation | 512 | 1 | 3 |
| AS46252US | HIA-TRCY - Hagerty Insurance Agency LLC | 512 | — | 2 |
| AS20269US | VAIL-SCHOOL-DISTRICT-1 - Vail School District | 512 | — | 2 |
| AS22130US | DAS-BGP-29 - Doctor's Associates LLC | 512 | — | 2 |
| AS17167US | MCSNOC01 - Microchip Computer Solutions, Inc. | 512 | — | 2 |
| AS30279US | TUHSD-AS1 - TOLLESON UNION HIGH SCHOOL DISTRICT #214 | 512 | — | 2 |
| AS6091US | INMAR-INC - Inmar, Inc. | 512 | — | 2 |
| AS400314US | GULF-WINDS-1 - Gulf Winds Credit Union | 512 | — | 2 |
| AS393296US | AUGUSTANACOLLEGEROCKISLANDIL - Augustana College | 512 | — | 1 |
| AS401933US | HASHIT - HashIT | 512 | — | 2 |
| AS20367US | CITY-OF-STCLOUD-FL - CITY OF ST. CLOUD | 512 | — | 2 |
| AS22579US | INDEPENDENCE-HEALTH-SYSTEM-BUTLER - Butler Memorial Hospital | 512 | — | 2 |
| AS27218US | INFINITUM-NIHIL - INFINITUM NIHIL | 512 | 1 | 2 |
| AS53284US | SR-TELECOM - Standing Rock Telecom | 512 | — | 2 |
| AS396101US | NETCLOUD-ASN - Netcloud Services | 512 | 1 | 3 |
| AS18459US | UAIC-INTERNET - UNITED AUTOMOBILE INSURANCE | 512 | — | 2 |
| AS10858US | HYPER-BNG-ASN - Hypertherm Inc. | 512 | — | 2 |
| AS397274US | GALAXE-SOLUTIONS - GALAXE.SOLUTIONS INC | 512 | — | 2 |
| AS27566US | EQUINIX-EC-NY - Equinix, Inc. | 512 | 1 | 3 |