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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 | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,143 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 | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| — |
| 1 |
| 1 |
| AS54118US | RRI-FMT2-01 - Robbins Research International Inc | — | 1 | 1 |
| AS211411US | wylie Wylie Fowler | — | 3 | 3 |
| AS200332US | FOLFY-ASN Nolan Trapp | — | 1 | 1 |
| AS200766US | BROWN-AS Kerry Lynn brown jr | — | 274 | 4 |
| AS216225US | qprisk Quest & Pearson LLC | — | 32 | 2 |
| AS399342US | SOPHOS-AS-NA - SOPHOS | — | 256 | 1 |
| AS210761US | PuduTest Pudu, LLC | — | 1 | 1 |
| AS396874US | JAMF - JAMF | — | 1 | 1 |
| AS3852US | MAGICMONAD - Magic Monad LLC | — | 65 | 2 |
| AS3000US | SPRINT-MRN-BLOCK - U.S. Sprint | — | 16.4K | 1 |
| AS213774US | NANCYANDSYSROM NANCYANDSYSROM LLC | — | 1 | 1 |
| AS215188US | KALLSYMS Nicholas Gregory | — | 16 | 1 |
| AS11944US | LTC-1 - LaValle Telephone Cooperative | — | 256 | 1 |
| AS197691US | TAIPEI101-AS Taipei101 Network LLC | — | 16 | 1 |
| AS56808US | SRSP-4-56808 - Aubrey Rose | — | 1 | 1 |
| AS6025US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | 6 | 6 |
| AS214974US | ZEROTECH-AS ZEROTECH CLOUD LLC | — | 1 | 1 |
| AS26768US | SAKURA - SAKURA LTD. | — | 2 | 2 |
| AS219255US | Lee-World Derek Lee | — | 1 | 1 |
| AS7318US | FOCALINK-AS - Focalink | — | — | 0 |
| AS809US | PPD-TRANSIT - PhirePhly Design | — | 1 | 1 |
| AS397955US | DEEPSOUTHCOMMUNICATIONS - Deep South Communications LLC | — | 1 | 1 |
| AS402406US | LINQ-APP - Linq | — | 2 | 2 |
| AS402653US | WCUUSD-2026-ASN - Washington | — | 16 | 1 |
| AS402948US | HOSTFC - HostFC, | — | 256 | 1 |
| AS397800US | AS-PRIMARY - ANVIL Systems Group, INC | — | 1 | 1 |
| AS18932US | STEPBROBD - StepBroBD, Inc. | — | 6 | 6 |
| AS36757US | DOSOIG - Department of State Office of Inspector General | — | 1 | 1 |
| AS211169US | CARAMELFOX-AS CaramelFox Networks LLC | — | 17 | 2 |
| AS402897US | CKSVC-01 - CK | — | 17 | 2 |
| AS11263US | BELLTOWER - Bell Tower Integration, Inc. | — | 2 | 2 |
| AS6043US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | 1 | 1 |
| AS27518US | FABAS - First American Bank | — | 2 | 2 |
| AS402537US | YMISO - YMISO | — | 32 | 2 |
| AS402933US | VOSMET - Vosmet | — | 5.2M | 10 |
| AS400429US | ALTHEA - Hawk Networks Inc | — | 8 | 1 |
| AS214085US | JUNIPERCIRCUIT-AS Eugene Lapidous | — | 1 | 1 |
| AS402671US | FROCEL - Frontier | — | 524.3K | 1 |
| AS397958US | SUNOAKI-NET-PREMIUM - Sunoaki Network LLC | — | 2 | 2 |
| AS197259US | KAOFISH-AS KAOFISH NETWORK LLC | — | 16 | 1 |
| AS402695US | SPUZE - SPUZE | — | 256 | 1 |
| AS394882US | JUPITERCLOUD - Jupiter Cloud LLC | — | 2 | 2 |
| AS401647US | FRO - Fro LLC | — | 4.1K | 1 |
| AS206193US | LEONARD-NET Jacob Leonard | — | 257 | 2 |
| AS33654US | CMCS - Comcast Cable Communications, LLC | — | 16 | 16 |
| AS397496US | INMARSAT-GOVERNMENT - Inmarsat Government | — | 1 | 1 |