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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 |
| 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 |
| AS400283US | ENDLESS-GROUP - Endless Group | 256 | 256 | 2 |
| AS3515US | DSI-WR - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS14132US | BLUEMATRIX-AS-BLUEMATRIX-INC - Blue Matrix I LLC | 256 | — | 1 |
| AS399634US | CC-VISA-01 - Cardinal Commerce Corporation | 256 | — | 1 |
| AS19417US | CENTR-65-ASN - Centra-Larm Monitoring, Inc. | 256 | — | 1 |
| AS30364US | TANMA - TanMar Communications, LLC | 256 | — | 1 |
| AS399920US | DAYNET-01 - Dayton | 256 | 4.1K | 2 |
| AS395070US | ALLSOUTH-INTERNET - AllSouth Federal Credit Union | 256 | — | 1 |
| AS396261US | UNIVERSITY-OF-KENTUCKY-RESEARCH-COMPUTING - University of Kentucky Research Computing | 256 | — | 1 |
| AS394966US | DFCU - Direct Federal Credit Union | 256 | — | 1 |
| AS47082US | BSKB-FC-AS - Birch, Stewart, Kolasch & Birch, LLP | 256 | — | 1 |
| AS54689US | UC-WILLIAMSBURG-ASN - University of the Cumberlands | 256 | — | 1 |
| AS29855US | SGCORP29855 - Scientific Games, LLC | 256 | — | 1 |
| AS401227US | JOULEWORKS - Jouleworks | 256 | 259 | 5 |
| AS16865US | SKYLINE - Skyline Security | 256 | 16 | 2 |
| AS11959US | T-CENTER - AEG | 256 | — | 1 |
| AS40094US | SOUTHCENTRAL-FOUNDATION-01 - Southcentral Foundation | 256 | — | 1 |
| AS18720US | PACSUN - Pacific Sunwear of California | 256 | — | 1 |
| AS54558US | HONL-621 - Healthcare Outsourcing Network, L.L.C | 256 | — | 1 |
| AS394549US | GEMAHS01 - GEMA/HS | 256 | — | 1 |
| AS21745US | USFOOD1 - US FOODS, INC. | 256 | — | 1 |
| AS22796US | CCC-HART - Campus Crusade for Christ, Inc. | 256 | 1 | 2 |
| AS400861US | 0X7C0 - 0x7c0 Labs LLC | 256 | 2 | 3 |