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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,109 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,430 |
| 256 |
| — |
| 1 |
| AS14132US | BLUEMATRIX-AS-BLUEMATRIX-INC - Blue Matrix I LLC | 256 | — | 1 |
| AS36587US | TRM-PJD-LP - Trumbull Corporation | 256 | — | 1 |
| AS26065US | ABA-1375 - Anchin, Block & Anchin LLP | 256 | — | 1 |
| AS1315US | IPFS - Imperial PFS | 256 | — | 1 |
| AS401962US | CUDDLE-PAWS - CuddlePaws | 256 | — | 1 |
| AS3134US | USAID-ASN - U.S. Agency for International Development | 256 | — | 1 |
| AS395284US | SHENKMANCAPITAL - Shenkman Capital Management, Inc. | 256 | — | 1 |
| AS54007US | WBT-ORL - Wycliffe Bible Translators, Inc | 256 | — | 1 |
| AS16389US | ST-INTERNET-AS - Shurtape Technologies, LLC | 256 | — | 1 |
| AS6105US | DENVERWATER-1 - Denver Water | 256 | — | 1 |
| AS398997US | APERIA-10-2020 - Aperia | 256 | 4.1K | 3 |
| AS54093US | NORTHERN-LIGHT-MAYO-HOSPITAL - Eastern Maine Healthcare Systems | 256 | — | 1 |
| AS19277US | IMAGEMASTER-01 - ImageMaster LLC | 256 | — | 1 |
| AS398902US | CASS-REGIONAL - Cass Regional Medical Center | 256 | — | 1 |
| AS401870US | AUTOMATE-THE-THINGS-01 - Automate The Things, LLC | 256 | 4.1K | 2 |
| AS401456US | DREWUN-01 - Drew University | 256 | — | 1 |
| AS394424US | US2-FINET - LIQUIDNET HOLDINGS INC. | 256 | — | 1 |
| AS394251US | CFF - Cystic Fibrosis Foundation | 256 | — | 1 |
| AS216242US | JUTLEY-AS Jeremy Utley | 256 | 256 | 5 |
| AS400185US | NMMC-ASN-1 - North Mississippi Medical Center Inc. | 256 | — | 1 |
| AS36340US | CITY-OF-TOLEDO - City of Toledo | 256 | — | 1 |
| AS18571US | WESTERNRESERVEGROUP - The Western Reserve Mutual Casualty Company | 256 | — | 1 |
| AS395296US | MSFA - MSFA | 256 | — | 1 |
| AS21745US | USFOOD1 - US FOODS, INC. | 256 | — | 1 |
| AS401337US | PLOVER - Plover LLC | 256 | 4.1K | 2 |
| AS32853US | DMTN - Denso Manufacturing, Tennessee, Inc. | 256 | — | 1 |
| AS402090US | DANIEL - 10990 W. Highlander Rd. LLC | 256 | — | 1 |
| AS401102US | WATCHFIRE-HQ-ASN-1 - Watchfire | 256 | — | 1 |
| AS399485US | TCW-AS-TOR - The TCW Group, Inc. | 256 | — | 1 |
| AS17172US | FJDPNET - FIFTH JUDICIAL DISTRICT OF PENNYSYLVANIA | 256 | 1 | 2 |
| AS63120US | CLARKS-AMERICAS - C & J Clark America, Inc. | 256 | — | 1 |
| AS400563US | AS-MVPS621-01 - Mounds View Public Schools | 256 | 256 | 2 |
| AS396267US | TAFT-STETTINIUS-HOLLISTER - Taft, Stettinius & Hollister, LLP | 256 | — | 1 |
| AS22525US | ATALANTA-SOSNOFF - Atalanta Sosnoff Capital, LLC | 256 | — | 1 |
| AS6129US | XAXIS-AS1 - mPlatform LLC | 256 | — | 1 |
| AS398303US | DIAMEDIC-SLC001 - Diamedic.NET | 256 | — | 1 |
| AS1053US | BEARCOM-ALWAYS-ON - BearCom Operating, LLC | 256 | — | 1 |
| AS400161US | HAWAIIRESEARCH - Academy for Internet Research Limited Liability Company | 256 | — | 1 |
| AS399935US | HAYASHIMO - Hayashimo LLC | 256 | 1 | 2 |
| AS21602US | CFVHS - Cape Fear Valley Medical Center | 256 | — | 1 |
| AS54546US | FERRARI-NORTH-AMERICA - Ferrari North America, Inc. | 256 | — | 1 |
| AS394698US | FITCHBURG-STATE-UNIVERSITY - Fitchburg State University | 256 | — | 1 |
| AS26220US | ANALYSISGROUP - Analysis Group, Inc. | 256 | — | 1 |
| AS40094US | SOUTHCENTRAL-FOUNDATION-01 - Southcentral Foundation | 256 | — | 1 |
| AS395287US | MSC-HQ - MSC Inc | 256 | 256 | 2 |
| AS16398US | SMC-GP - Supermicro Computer | 256 | — | 1 |