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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. | 218M | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 2 |
| AS14945US | FMC-401NEWING-LOH - FAIRFIELD MEDICAL CENTER | 512 | — | 2 |
| AS394275US | PARALLELS - Parallels Inc | 512 | — | 1 |
| AS54468US | CHMCA - Children's Hospital Medical Center of Akron | 512 | — | 2 |
| AS53578US | DISNEY-WDAS-AS - Disney Worldwide Services, Inc. | 512 | — | 2 |
| AS62683US | PTC - PREFIL TEC, INC | 512 | — | 2 |
| AS11235US | ITRONHOSTINGAS - Itron-Hosting | 512 | — | 2 |
| AS6394US | DATA-BROADCASTING - Intercontinental Exchange, Inc. | 512 | — | 2 |
| AS36596US | FACC - Florida Association of Court Clerks, Inc. | 512 | — | 2 |
| AS396204US | C1-BGP - CONVERGEONE HOLDINGS, INC. | 512 | — | 2 |
| AS36572US | WPBF-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS14409US | MCSI - Myers Computer Service, Inc. | 512 | — | 2 |
| AS398098US | LA-COLL-INET - City National Bank | 512 | — | 2 |
| AS398074US | SN-COLL-DIA - City National Bank | 512 | — | 2 |
| AS39978US | REED-SMITH-ASN - REED SMITH LLP | 512 | — | 2 |
| AS53769US | BBKLAW - Best Best & Krieger LLP | 512 | — | 2 |
| AS55132US | SAJAH - Beverly Hills Hotel | 512 | — | 2 |
| AS402671US | FROCEL - Frontier | 512 | 1M | 4 |
| AS29864US | SPORTSMANS-WAREHOUSE - Sportsman's Warehouse, Inc. | 512 | — | 2 |
| AS394058US | TELOSC-ASH - Telos Corporation | 512 | — | 2 |
| AS26717US | AS-RPS - Richmond Public Schools | 512 | — | 1 |
| AS32889US | SOUTHWESTERN-WIRELESS - Southwestern Wireless, Inc. | 512 | — | 2 |
| AS23010US | FFHSJ - Fried, Frank, Harris, Shriver & Jacobson LLP | 512 | — | 2 |
| AS397979US | AIRMAX-1 - Airmax | 512 | — | 2 |
| AS399619US | BACKCOUNTRY-BROADBAND - Backcountry Broadband LLC | 512 | 4.6K | 12 |
| AS401739US | REDLUFF-NET01 - RedLuff, LLC | 512 | — | 2 |
| AS394129US | USS - United Site Services | 512 | — | 2 |
| AS29769US | AWT-ASN-29769 - Allwire Technologies LLC | 512 | 4.1K | 3 |
| AS18902US | CMC-II-LLC - CMC II, LLC | 512 | — | 2 |
| AS16797US | TASB-AS - Texas Association of School Boards, Inc | 512 | — | 1 |
| AS395454US | KUKUI-NET1 - Kukui | 512 | — | 1 |
| AS396276US | CAGE-CUBE-518 - Cage Cube Technologies, Inc. | 512 | — | 2 |
| AS46361US | GILLETTE-CHILDRENS-SPECIALTY-HEALTHCARE - Gillette Children's Specialty Healthcare | 512 | — | 2 |
| AS19732US | TGNA-WTSP - TEGNA Inc. | 512 | — | 2 |
| AS399140US | SINGAPORE-DC - Red Hat, Inc. | 512 | 1 | 3 |
| AS19652US | VACATION-EXPRESS - VACATION EXPRESS | 512 | — | 2 |
| AS53444US | ZSCALER-SJC - ZSCALER, INC. | 512 | — | 2 |
| AS25952US | AEAINVESTORS - AEA Investors Inc. | 512 | — | 2 |
| AS62894US | PSD-EDTEC-K20-RC-01 - Puyallup School District | 512 | — | 2 |
| AS64201US | PUREIP - Pure IP US LLC | 512 | — | 1 |
| AS400042US | CRC-RITA-01 - Campus Research Corporation | 512 | 4.1K | 3 |
| AS30680US | FISCOM-COLO5-JAX-FL - Fidelity National Information Services, Inc. | 512 | — | 2 |
| AS50937US | INFINITIUM-AS INFINITIUM CORPORATION | 512 | 1 | 3 |
| AS1562US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS16981US | EMMIS-1 - Emmis Communications Corp. | 512 | — | 2 |
| AS14939US | THRES - THRESHOLD COMMUNICATIONS,INC. | 512 | 8.2K | 4 |
| AS64210US | ALTERA - Altera Corporation | 512 | — | 2 |