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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS399872US | CULLMAN-REGIONAL-MEDICAL-CENTER - Cullman Regional | 256 | — | 1 |
| AS399235US | UPLINK-INTERNET - Uplink L.L.C. | 256 | — | 1 |
| AS395880US | BCL-AS1 - Boomerang Communications LLC | 256 | 65.5K | 2 |
| AS401611US | EYECAST - Optical Crime Prevention, Inc. | 256 | — | 1 |
| AS63064US | YCAS - Yotta Connect LLC | 256 | — | 1 |
| AS400679US | UBERDUCK - Uberduck, LLC | 256 | 4.1K | 2 |
| AS393638US | MESQ-TX - City of Mesquite Texas | 256 | 1 | 2 |
| AS398428US | NMTRANS-HQ-AS01 - N&M Transfer Co., Inc. | 256 | — | 1 |
| AS54403US | EOA-WATR-01 - Essense of Australia, Inc. | 256 | — | 1 |
| AS22022US | HUB-GROUP - Hub Group, Inc. | 256 | — | 1 |
| AS14531US | LM-ATL - Lockheed Martin Corporation | 256 | — | 1 |
| AS20274US | FVCC-AS - Flathead Valley Community College | 256 | — | 1 |
| AS11378US | SRLLP - Stoel Rives LLP | 256 | — | 1 |
| AS16844US | ENTRATA - Entrata | 256 | — | 1 |
| AS32984US | RUELALA-INC - Rue La La Inc | 256 | — | 1 |
| AS26500US | FISHER-TITUS - Fisher-Titus Medical Center | 256 | — | 1 |
| AS399774US | ANDELYN-BIOSCIENCES-01 - Andelyn Biosciences, Inc. | 256 | — | 1 |
| AS14879US | PARIS-AS - PARIS ACCESSORIES INC. | 256 | — | 1 |
| AS32383US | ROME-NET - ROME Sverdrup | 256 | — | 1 |
| AS396231US | ABILITY-BUSINESS - Ability Business | 256 | 1 | 2 |
| AS394290US | NBS-92 - Nightingale-Bamford School | 256 | — | 1 |
| AS54730US | BSA-ASN1 - BS&A Software, LLC | 256 | — | 1 |
| AS40368US | NIXCON-GROUP-LLC - Nixcon | 256 | — | 1 |
| AS16505US | HTF-FREDERICK - HTF | 256 | — | 1 |
| AS399551US | MILLENNIUM-SYSTEMS-INC - Millennium Systems, Inc. | 256 | 65.5K | 2 |
| AS393995US | PFFCUGW - Police and Fire Federal Credit Union | 256 | — | 1 |
| AS11619US | ATS-INC - ANDERSON TRUCKING SERVICE, INC. | 256 | — | 1 |
| AS30218US | ACE-002 - Ace Data Centers II, L.L.C. | 256 | — | 1 |
| AS17407US | CHERRYROAD-TECH - CherryRoad Technologies, Inc. | 256 | — | 1 |
| AS396934US | KOLLMORGEN - Kollmorgen Corporation | 256 | — | 1 |
| AS22695US | PLAYGROUND - Playground Global, LLC | 256 | 1 | 2 |
| AS1523US | DNIC-ASBLK-01522-01526 - Headquarters, USAISC | 256 | — | 1 |
| AS135004US | FY-AS-AP - fy, Inc. | 256 | — | 1 |
| AS399232US | SETON-HOME - Seton Home Study School | 256 | — | 1 |
| AS46150US | SNHU - Southern New Hampshire University | 256 | — | 1 |
| AS400340US | MATSON-NAV - Matson Navigation Company, Inc. | 256 | — | 1 |
| AS395618US | QUEENS-HEALTH-SYSTEM - The Queen's Medical Center | 256 | — | 1 |
| AS18967US | GOUCHER COLLEGE - Goucher College | 256 | — | 1 |
| AS64246US | CRA-CO - Cator, Ruma & Associates, Co. | 256 | 2 | 3 |
| AS397276US | FL-NINTHCIRCUIT - Ninth Judicial Circuit Court of Florida | 256 | — | 1 |
| AS19354US | WJCC-PUBLIC-SCHOOLS - Williamsburg James City County Public Schools | 256 | — | 1 |
| AS11959US | T-CENTER - AEG | 256 | — | 1 |
| AS46245US | NIFCO-ASN-01 - NIFCO America | 256 | — | 1 |
| AS1809US | PTFS - Performance Team | 256 | — | 1 |
| AS395317US | RISPA - Rhode Island State Police | 256 | — | 1 |
| AS398967US | 810-SEVENTH-AVENUE-BGP - etc.venues NYC LLC | 256 | — | 1 |