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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 |
| AS400645US | AXXESS-NETWORKS2 - Axxess Networks LLC | 256 | — | 1 |
| AS32658US | PINELLAS-COUNTY-SO - Pinellas County Government | 256 | — | 1 |
| AS33245US | JABIL-AS-SINU-PH - Jabil | 256 | — | 1 |
| AS398540US | COMPASS-MINERALS-01 - Compass Minerals America Inc. | 256 | — | 1 |
| AS36788US | WREC - Wells Rural Electric Company | 256 | — | 1 |
| AS29779US | ETONICT - Eton Infocomm Technology Inc | 256 | — | 1 |
| AS396057US | CUD-9305 - Credit Union of Denver | 256 | — | 1 |
| AS31780US | TRINITYPARTNERSWALTHAMCONNECTION - TRINITY PARTNERS | 256 | — | 1 |
| AS210676US | Appline_Group_LLC Appline Group LLC | 256 | — | 1 |
| AS21931US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS13785US | SMH - SHORE MEMORIAL HOSPITAL | 256 | — | 1 |
| AS400797US | PIC-EXT - Ping Identity Corporation | 256 | 1 | 2 |
| AS18513US | MCSD-NET-01 - Muscogee County School District | 256 | — | 1 |
| AS394732US | DMOS-1 - Des Moines Orthopaedic Surgeons, P.C. | 256 | — | 1 |
| AS398951US | WBSTRM - WebStream llc | 256 | 4.1K | 2 |
| AS40194US | MARINEBIO - MBL | 256 | — | 1 |
| AS397858US | THARANCO-GROUP - Tharanco Group Inc | 256 | — | 1 |
| AS399820US | ATOMIC-NETWORKS-1 - SPARKED HOST LLC | 256 | 1 | 2 |
| AS54476US | EMGTELECOM - VOX CONNECT INC | 256 | — | 1 |
| AS21630US | SHV1 - Sports South, L.L.C. | 256 | 1 | 2 |
| AS399338US | CENTRAL-VALLEY-INTERNET - Central Valley Internet LLC | 256 | 4.1K | 2 |
| AS54336US | HANSON-BRIDGETT-LLP - Hanson Bridgett LLP | 256 | — | 1 |
| AS33477US | KNOX-COLLEGE-1837 - Knox College | 256 | — | 1 |
| AS397322US | FORWARD-THINKING - Forward Thinking Systems LLC | 256 | — | 1 |
| AS401380US | CYBERFOREST-COMMUNICATION-AMERICAN - CyberForest | 256 | 1 | 2 |
| AS399981US | CRST-THE-TRANSPORTATION-SOLUTION - CRST THE TRANSPORTATION SOLUTION | 256 | — | 1 |
| AS393583US | KIRKLAND-ELLIS-CH - Kirkland & Ellis LLP | 256 | — | 1 |
| AS27457US | SLG-2 - SL Green Realty Corp | 256 | — | 1 |
| AS46881US | ACMH-HOSPITAL - ACMH Hospital | 256 | — | 1 |
| AS396911US | DPLO-411SSFLT - Diplomat Pharmacy, Inc | 256 | — | 1 |
| AS93US | NTTA-93 - NTT America, Inc. | 256 | 1 | 2 |
| AS26781US | BHSALA - Baptist Health System of Alabama | 256 | — | 1 |
| AS399293US | HOLASN - Hollingsworth Logistics Group LLC | 256 | — | 1 |
| AS394690US | ESL-FARM-AS - ESL Federal Credit Union | 256 | — | 1 |
| AS40599US | GENTEXCORPORATION - Gentex Corporation | 256 | — | 1 |
| AS401303US | NNM-004 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS399716US | ISHIP-CORP - ISHIP, INC. | 256 | — | 1 |
| AS27335US | BLUERIDGE-01 - Blueridge Capital, L.L.C. | 256 | — | 1 |
| AS18820US | SARGENTO-AS-0 - Sargento Foods, Inc. | 256 | — | 1 |
| AS22559US | GNF-ORG - Genomics Institute of the Novartis Research Foundation | 256 | — | 1 |
| AS26647US | MSS1 - Movers Specialty Service | 256 | — | 1 |
| AS35856US | LWCC - Louisiana Workers' Compensation Corporation | 256 | — | 1 |
| AS399814US | LAER-AS-LHR1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS40777US | TRI-DELTA - Tri-Delta Resources, Corp. | 256 | — | 1 |
| AS16533US | AS-SAFETY-INSURANCE - Safety Insurance Company | 256 | — | 1 |
| AS395435US | GAIA - Gaia | 256 | — | 1 |