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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 | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,220 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 | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| — |
| 1 |
| AS402356US | AS-GRIDPRISE-ANY - Gridprise | 256 | 1 | 2 |
| AS394124US | SHOESHOW-AS-1 - SHOE SHOW Inc. | 256 | 4.1K | 2 |
| AS32416US | WHARTON-COUNTY-JUNIOR-COLLEGE - Wharton County Junior College | 256 | — | 1 |
| AS393722US | SUMMT-ORTHO - Summit Ortho | 256 | — | 1 |
| AS14660US | ELEVATED-NY - Elevated Computing LLC | 256 | — | 1 |
| AS21811US | BAB - Build-A-Bear Workshop, Inc. | 256 | — | 1 |
| AS23109US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS18661US | DCA-BGP - Dunn Carney Allen Higgins & Tongue, LLP | 256 | — | 1 |
| AS36266US | SPL-ASN - Stonepeak Partners LP | 256 | — | 1 |
| AS395934US | LEGALZOOM - Legalzoom.com, inc. | 256 | — | 1 |
| AS17131US | OEM-CONTROLS - OEM Controls, Inc. | 256 | — | 1 |
| AS398408US | RIVHS-01 - RIVERSIDE HEALTH SYSTEM | 256 | — | 1 |
| AS397756US | POWERSCHOOL-FOLSOM - PowerSchool | 256 | — | 1 |
| AS11307US | 6750REI - Recreational Equipment Inc. | 256 | — | 1 |
| AS394523US | HILLNET - The Hill School | 256 | — | 1 |
| AS32604US | UWALKIN - uwalkin IT Solutions | 256 | — | 1 |
| AS395773US | COLLEGIS - Collegis Education | 256 | — | 1 |
| AS14934US | AGS-LLC-AGO - AGS | 256 | — | 1 |
| AS12254US | INSTRUCTURE-MAIN - Instructure, Inc | 256 | — | 1 |
| AS396967US | TOWNSHIP-OF-WOODBRIDGE - Township of Woodbridge | 256 | — | 1 |
| AS36814US | THE-TOLEDO-BLADE-COMPANY - THE TOLEDO BLADE COMPANY | 256 | — | 1 |
| AS395651US | TAHOEIX - Tahoe Internet Exchange (TahoeIX) | 256 | 1 | 2 |
| AS399977US | VIRTUALHOST-PRODUCTION-01 - Honest Ventures, LLC | 256 | — | 1 |
| AS20427US | AAAE - American Association of Airport Executives | 256 | — | 1 |
| AS394600US | MZCORP - AppLovin Corporation | 256 | 1 | 2 |
| AS1646US | ABF - American Solutions for Business | 256 | — | 1 |
| AS23306US | PLASTIPAK-PACKAGING - Plastipak Packaging | 256 | — | 1 |
| AS39952US | SPECTRA-AS - Spectra Logic Corporation | 256 | 1 | 2 |
| AS63118US | BGP-LATHAM - New York State United Teachers | 256 | — | 1 |
| AS398042US | IXPANSE - RTE Group, Inc. | 256 | — | 1 |
| AS401579US | RYTEL - RyTel LLC | 256 | — | 1 |
| AS39940US | POLICE-AND-FIRE - Police and Fire Federal Credit Union | 256 | — | 1 |
| AS46904US | WEITZ-LUX - Weitz & Luxenberg P.C | 256 | — | 1 |
| AS22076US | NEWSBANK - NewsBank Inc. | 256 | — | 1 |
| AS399605US | REMEMBERTHEMILK - Remember The Milk Inc. | 256 | — | 1 |
| AS397253US | WCCLS-AS-01 - Washington County Cooperative Library Services | 256 | — | 1 |
| AS26262US | RWIFI-AS01 - Circle City Internet | 256 | 256 | 2 |
| AS18578US | SCHLUTER-SYSTEMS-LP - Schluter Systems L.P. | 256 | — | 1 |
| AS394020US | LFUCG - Lexington-Fayette Urban County Government | 256 | — | 1 |
| AS53287US | 5QCLOUD - 5Q Cloud | 256 | — | 1 |
| AS395145US | MCDONOGH - McDonogh School, Inc. | 256 | — | 1 |
| AS394812US | DCE911 - Decatur County E911 Board | 256 | 16 | 2 |
| AS17247US | TU - The Times Union | 256 | — | 1 |
| AS199454US | esimynetworkservices ESIMY LLC | 256 | — | 1 |
| AS398980US | OSINET - OSI Holdings LLC | 256 | 256 | 2 |
| AS40547US | AERAENERGYLLC - Aera Energy LLC | 256 | — | 1 |