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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 | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS23359US | WLNYASN - WLNY-TV Inc | 256 | — | 1 |
| AS21605US | AHBELO-CORP - DallasNews Corporation | 256 | — | 1 |
| AS11345US | AKIMA-MANAGEMENT-SERVICES - Akima Management Services, Inc. | 256 | — | 1 |
| AS40734US | LOMBARD-ODIER-1798 - 1798 Global Partners (USA), Corp. | 256 | — | 1 |
| AS401492US | WINDING-RIVERS-LIBRARY-SYSTEM - Winding Rivers Library System | 256 | — | 1 |
| AS46534US | VISIO-ASN - Vision Wifi Inc | 256 | — | 1 |
| AS20262US | DON-JARVIS - Data Innovations LLC | 256 | — | 1 |
| AS393992US | TOWNOFBROOKHAVEN - Town of Brookhaven | 256 | — | 1 |
| AS393748US | LBMCAS01 - LBMC | 256 | — | 1 |
| AS400959US | CARYNC - Town of Cary | 256 | — | 1 |
| AS30659US | OCFL-COMPTROLLER - Orange County Comptroller | 256 | — | 1 |
| AS394549US | GEMAHS01 - GEMA/HS | 256 | — | 1 |
| AS19104US | MHSC-01 - Memorial Hospital of Sweetwater County Foundation | 256 | — | 1 |
| AS395278US | SERTASIMMONSBEDDING - Serta Simmons Bedding, LLC | 256 | — | 1 |
| AS22763US | BGP-DUCKS-INC - DUCKS UNLIMITED, INC. | 256 | — | 1 |
| AS401111US | WAVEPOINT - Wavepoint LLC | 256 | 256 | 2 |
| AS395299US | SANJOSE-COSTARICA-01 - THE WESTERN UNION COMPANY | 256 | — | 1 |
| AS398550US | ICCMS - Itawamba Community College | 256 | — | 1 |
| AS19765US | IBM-RC-440ABL - IBM Corporation | 256 | — | 1 |
| AS402171US | GW-ALB-01 - Glitch Works, LLC | 256 | 1 | 2 |
| AS26098US | GAA - Greensboro Auto Auction | 256 | — | 1 |
| AS396020US | LAMTEC-ASN - LAMTEC CORPORATION | 256 | — | 1 |
| AS16725US | PHILLYIX-CACHES - Philadelphia Internet Exchange | 256 | — | 1 |
| AS397273US | RENDER - Render | 256 | — | 1 |
| AS393986US | BRIGHTRIDGE-1945 - Johnson City Power Board | 256 | 4.1K | 2 |
| AS63460US | DIGITALSIMPLISTICS - Digital Simplistics, Inc. | 256 | — | 1 |
| AS400027US | ECH-01 - Earlychildhood LLC | 256 | — | 1 |
| AS11089US | ERGON-NETWORK - ERGON | 256 | — | 1 |
| AS22757US | CITY-OF-AKRON-OHIO - City of Akron | 256 | — | 1 |
| AS402495US | BSH-ENT-01 - BSH | 256 | 256 | 2 |
| AS397526US | LHM-ASN-2247211 - Liberty Healthcare Management Inc. | 256 | — | 1 |
| AS399563US | BUNN-O-001 - BUNN-O-MATIC CORPORATION | 256 | — | 1 |
| AS402153US | QUICK-TECH-RESULTS-01 - Quick Tech Results LLC | 256 | 256 | 2 |
| AS32797US | NEXTGEN - NextGen Multimedia Limited | 256 | 4.1K | 2 |
| AS53432US | OHRH - Owensboro Health, Inc. | 256 | — | 1 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS13117US | ASNXGEU Nexusguard, Inc | 256 | — | 1 |
| AS32728US | PALOMA-PARTNERS - Paloma Partners | 256 | — | 1 |
| AS396496US | DMBA-PRIMARY - Deseret Mutual Benefit Administrators | 256 | — | 1 |
| AS395844US | LUSD - LUSD | 256 | — | 1 |
| AS15097US | FFF-AS - FFF Enterprises, Inc | 256 | — | 1 |
| AS33449US | ZINIO-PRD-01 - Zinio Systems, Inc | 256 | — | 1 |
| AS26839US | CBS-FULTON - CREDIT BUREAU SYSTEMS | 256 | — | 1 |
| AS399750US | DIG-01 - Funeral Directors Life Insurance Company | 256 | — | 1 |
| AS22614US | IGA-ASN-01 - Legislative Services Agency | 256 | — | 1 |
| AS396380US | AS-ACCESSLA - ACCESS SERVICES | 256 | — | 1 |