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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| — |
| 65.5K |
| 1 |
| AS402933US | VOSMET - Vosmet | — | 1M | 2 |
| AS395841US | TAMCLOUD - tamCloud, Inc. | — | 4.1K | 1 |
| AS403168US | SUN-03 - Sun | — | 1 | 1 |
| AS397955US | DEEPSOUTHCOMMUNICATIONS - Deep South Communications LLC | — | 1 | 1 |
| AS399342US | SOPHOS-AS-NA - SOPHOS | — | 256 | 1 |
| AS218794US | XORIST James Jones | — | 1 | 1 |
| AS19896US | AS-ALBROHOLDINGS-1 - Albro Holdings LLC | — | 1 | 1 |
| AS403145US | VMNODE-AS1 - VMNode | — | 256 | 1 |
| AS197137US | YUNHU-NETWORKS-LLC YUNHU NETWORKS LLC | — | 2 | 2 |
| AS206081US | JORDANSAVOCANET Jordan Savoca | — | 1 | 1 |
| AS216052US | CDUBS-NET Craig Schulz | — | 33 | 3 |
| AS401861US | CADUCEUS-NETWORK - Caduceus Networks LLC | — | 3.1M | 6 |
| AS401519US | SUNOAKI-NET-CCH - Sunoaki Network LLC | — | 2 | 2 |
| AS22400US | WEB2OBJECTS - Web2Objects LLC | — | 2 | 1 |
| AS402008US | L7CORE-L7AS01 - L7CORE, LLC | — | 1 | 1 |
| AS402653US | WCUUSD-2026-ASN - Washington | — | 16 | 1 |
| AS11944US | LTC-1 - LaValle Telephone Cooperative | — | 256 | 1 |
| AS397800US | AS-PRIMARY - ANVIL Systems Group, INC | — | 1 | 1 |
| AS11938US | ABANTU - NCRYPTD LLC | — | 1 | 1 |
| AS7335US | LOOP - Loop Phone Organization | — | — | 0 |
| AS210660US | CAVEFOX CaveFox LLC | — | 257 | 2 |
| AS197259US | KAOFISH-AS KAOFISH NETWORK LLC | — | 16 | 1 |
| AS402406US | LINQ-APP - Linq | — | 2 | 2 |
| AS4221US | DNIC-ASBLK-04214-04221 - United States Department of Defense (DoD) | — | 2 | 2 |
| AS401507US | IMPUT - imput | — | 2 | 2 |
| AS6570US | CNCS - AmeriCorps | — | 256 | 1 |
| AS399477US | RYAN-PUBLIC-ASN - Ryan Companies US, Inc. | — | 256 | 1 |
| AS396931US | HOSTROYALE-TECHNOLOGIES-02 - HostRoyale LLC | — | 524.3K | 1 |
| AS20447US | KITAUJI-NETWORKS - Kitauji Networks LLC | — | 256 | 1 |
| AS205232US | EvilNET Felix Alcantara | — | 768 | 3 |
| AS208812US | ONDRYA Ondrya LLC | — | 1 | 1 |
| AS211562US | andrewnet andrewnet llc | — | 262 | 7 |
| AS6043US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | 1 | 1 |
| AS396088US | SOMNET-AS-01 - SOMCO LLC | — | 1 | 1 |
| AS215313US | LINEAR-NETWORK Emily Ingalls | — | 17 | 2 |
| AS55126US | HPDF-JLAB - High Performance Data Facility | — | 1 | 1 |
| AS207556US | SERVERFORGE - ServerForge LLC | — | 64 | 1 |
| AS399670US | COMPUTE - HKSOFT | — | 1 | 1 |
| AS219383US | LewisAS Andrew Lewis | — | 19 | 4 |
| AS397958US | SUNOAKI-NET-PREMIUM - Sunoaki Network LLC | — | 2 | 2 |
| AS10515US | CLT-NIC - VeriSign Infrastructure & Operations | — | 1 | 1 |
| AS394882US | JUPITERCLOUD - Jupiter Cloud LLC | — | 2 | 2 |
| AS401932US | ELEMONO-AS - Elemono LLC | — | 4 | 4 |
| AS219255US | Lee-World Derek Lee | — | 1 | 1 |
| AS51312US | SRSP-4-51312 - Aubrey Rose | — | 16 | 1 |
| AS205398US | TYLER-OBRIEN Tyler Obrien | — | 301 | 31 |