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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 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 | 3,891 |
| 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 |
| AS-METROLIST-SAC - MetroList Services, Inc. |
| 256 |
| — |
| 1 |
| AS26711US | ICANN-MDR - ICANN | 256 | 1 | 2 |
| AS401858US | ATTITUDEONLINE - Attitude Online | 256 | — | 1 |
| AS22415US | AVANTWIRELESS - AvantWireless LLC | 256 | — | 1 |
| AS400798US | PITIX-INFRA - Pittsburgh Internet Exchange | 256 | 4.1K | 2 |
| AS18696US | ETHNOS360-USHO - ETHNOS360, INC. | 256 | 1 | 2 |
| AS402114US | CYPRUSCU - CYPRUS CREDIT UNION INC. | 256 | — | 1 |
| AS14748US | BIG5CORP - Big 5 Corp. | 256 | — | 1 |
| AS16678US | AUSRAD - Austin Radiological Association | 256 | — | 1 |
| AS394382US | EL-DALLAS - Elevated Computing LLC | 256 | — | 1 |
| AS401635US | WALSWORTH - EAU CLAIRE - WALSWORTH PUBLISHING COMPANY | 256 | — | 1 |
| AS398241US | CELLNETIX - CELLNETIX LABS LLC | 256 | — | 1 |
| AS14108US | LOGIVISION-01 - Logivision Technologies | 256 | — | 1 |
| AS401236US | SBI - South Bay Internet | 256 | — | 1 |
| AS17333US | COLLEGE-OF-SAINT-MARY - College of Saint Mary | 256 | — | 1 |
| AS43074US | MHS-331-43074 - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS397258US | GTRC-01 - Graton Resort and Casino | 256 | — | 1 |
| AS22358US | VERDUGO-FIRE-COMM-CENTER-1 - Verdugo Fire Communications Center | 256 | — | 1 |
| AS32728US | PALOMA-PARTNERS - Paloma Partners | 256 | — | 1 |
| AS17068US | ASN-OMIG - Ohio Mutual Insurance Company | 256 | — | 1 |
| AS22668US | SPARTA-COMMUNITY-HOSPITAL - Sparta Community Hospital | 256 | — | 1 |
| AS54361US | PBCI - Poarch Band of Creek Indians | 256 | — | 1 |
| AS393983US | WWWROCKFORD - Wolverine Worldwide | 256 | 256 | 2 |
| AS54349US | FLNG-HOU - Freeport LNG Development, L.P. | 256 | — | 1 |
| AS58202US | NoPKT NoPKT LLC | 256 | 4 | 5 |
| AS394626US | KUSI-SUBTAC001 - Kentucky Underground Storage, Inc. | 256 | 1 | 2 |
| AS31927US | MPR-ASSOCIATES - MPR Associates | 256 | — | 1 |
| AS40520US | STBH-ORG - Saint Bernard Hospital | 256 | — | 1 |
| AS11768US | GRYPHO5-02 - Grypho5, LLC | 256 | — | 1 |
| AS21754US | MARKEL-CORPORATION - Markel Corporation | 256 | — | 1 |
| AS395231US | IFANR - IFANR LLC | 256 | 4.1K | 2 |
| AS400057US | UPSTATE-NIAGARA-COOP-2021 - Upstate Niagara Cooperatives | 256 | — | 1 |
| AS6105US | DENVERWATER-1 - Denver Water | 256 | — | 1 |
| AS54513US | ERHC - EL RIO HEALTH CENTER | 256 | — | 1 |
| AS54424US | DCE-ASN - Festival Fun Parks,LLC | 256 | — | 1 |
| AS62855US | CMA-MISCNY - Currier, McCabe and Associates, Inc. | 256 | — | 1 |
| AS63141US | XACTLY-CORP - Xactly Corporation | 256 | — | 1 |
| AS26708US | CCS-AS - Center for Computing Sciences | 256 | — | 1 |
| AS401867US | HOME-SHOP - HOME SHOP | 256 | — | 1 |
| AS54093US | NORTHERN-LIGHT-MAYO-HOSPITAL - Eastern Maine Healthcare Systems | 256 | — | 1 |
| AS402540US | MJWINNOVATIONS - MJW | 256 | 1 | 2 |
| AS14123US | UPLION-AS-01 - UpLion | 256 | — | 1 |
| AS5US | SYMBOLICS - WFA Group LLC | 256 | — | 1 |
| AS19914US | AEG-SPRINTCTR - AEG Kansas City Arena, LLC | 256 | — | 1 |
| AS40636US | PLEXUSSYSTEMS-US1 - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS18559US | CANIK - CANIK USA, LLC | 256 | 256 | 2 |
| AS402629US | MVNO-VOIP-ASN - TAIPEI101 | 256 | 1 | 2 |