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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 |
| 256 |
| — |
| 1 |
| AS393533US | SECWITECH-NETWORKS - SECURITY WIRELESS & TECHNOLOGY L.L.C. | 256 | — | 1 |
| AS15120US | RHS-AS - Rockford Health System | 256 | — | 1 |
| AS16915US | MINNESOTATWINSLLC - Minnesota Twins, LLC | 256 | — | 1 |
| AS46688US | LANDSCAPE-STRUCTURES - Landscape Structures, Inc. | 256 | — | 1 |
| AS55087US | BRAZOS-ASN-1 - Brazos County | 256 | — | 1 |
| AS396165US | SAC - BLUE DIAMOND GROWERS | 256 | — | 1 |
| AS46965US | SHAKESPEARETHEATRE - Shakespeare Theatre Company | 256 | — | 1 |
| AS398398US | DIGITALREALTY-IT-04 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS399785US | CITY-OF-NEW-SMYRNA-BEACH-ASN - City of New Smyrna Beach | 256 | — | 1 |
| AS395790US | SMECO-ASN - SOUTHERN MARYLAND ELECTRIC COOPERATIVE INC | 256 | — | 1 |
| AS30000US | KRAMERLEVIN-1 - Kramer Levin Naftalis & Frankel LLP | 256 | — | 1 |
| AS11913US | ELEVATE-HOMESCRIPTIONS-01 - Elevate Homescriptions | 256 | 16 | 2 |
| AS32126US | SFBCIC-AS - Southern Farm Bureau Casualty Insurance Company | 256 | — | 1 |
| AS398085US | IHA-01 - Trinity Health IHA Medical Group | 256 | — | 1 |
| AS19538US | LUXOR - Luxor | 256 | — | 1 |
| AS398990US | JAA-ASN-26 - JACKSONVILLE AVIATION AUTHORITY | 256 | — | 1 |
| AS46116US | FIXNETIX-ARIN-BGP-ASN - Fixnetix Inc | 256 | — | 1 |
| AS397585US | TNS-ASN-01 - Tech and Networks Solutions, LLC | 256 | — | 1 |
| AS210311US | BASICNETWORKS-AS Basic Networks Corp | 256 | — | 1 |
| AS47051US | SV-4 - Storm8, Inc | 256 | — | 1 |
| AS54295US | CADC-NET - Deep Edge | 256 | — | 1 |
| AS398797US | NUBESEC - Nubesec LLC | 256 | — | 1 |
| AS397424US | WAM-ASN-01 - Weiss Asset Management LP | 256 | — | 1 |
| AS54331US | NVRH - NORTHEASTERN VERMONT REGIONAL HOSPITAL, INC. | 256 | — | 1 |
| AS399017US | BADGERMETER-01 - Badger Meter Inc | 256 | — | 1 |
| AS46194US | SPECTRUM-EVERSTREAM-CITYSC - St Louis CITY SC | 256 | — | 1 |
| AS393795US | PTCT - PTC Therapeutics, Inc | 256 | — | 1 |
| AS396412US | SRSBIZ - SRS BIZ | 256 | — | 1 |
| AS54390US | LAMBNET - XtcN | 256 | — | 1 |
| AS18636US | ONDRYA - ONDRYA LLC | 256 | 33 | 4 |
| AS401554US | UHH-ASN - Upland Hills Health | 256 | — | 1 |
| AS16763US | TIDEWORKS - Tideworks Technology | 256 | — | 1 |
| AS30512US | RIDGEVIEW-MEDICAL-CENTER - Ridgeview Medical Center | 256 | — | 1 |
| AS219034US | BadAimWeeb Quang Lam Le | 256 | 1 | 2 |
| AS35973US | CCWRD-AS - Clark County Water Reclamation District | 256 | — | 1 |
| AS401997US | ANC-187-AS - Arkansas Northeastern College | 256 | — | 1 |
| AS26487US | NEWPIRVINE - Newport Corporation | 256 | — | 1 |
| AS401271US | WIDOJ2 - Wisconsin Department of Justice | 256 | — | 1 |
| AS401875US | IVM-022 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS63194US | CRASH - Crashlytics, Inc | 256 | — | 1 |
| AS397612US | ANX - ARCHITECTURAL NEXUS, INC | 256 | — | 1 |
| AS398806US | VIS-2020-01 - Valli Information Systems, Inc | 256 | — | 1 |
| AS11270US | TSCU-01 - Peak Credit Union | 256 | — | 1 |
| AS23120US | LEGACY-OKC-ASN - Legacy | 256 | — | 1 |
| AS398755US | 12GLOBAL - Iroute Inc. | 256 | — | 1 |
| AS214732US | RATATOSKR RATATOSKR LLC | 256 | 3 | 4 |