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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS32805US | O365-ENABLEMENT - Securitas Security Services USA, Inc | 512 | — | 2 |
| AS402423US | LUYANI - Luyani | 512 | — | 2 |
| AS398737US | INTELLIVOICE - IntelliVoice | 512 | — | 2 |
| AS53878US | EMC-AS - Dell, Inc. | 512 | — | 2 |
| AS19839US | SANDSBETHLEHEM - Wind Creek Bethlehem LLC | 512 | — | 2 |
| AS33573US | BAQMD-SF - Bay Area Air Quality Management District | 512 | — | 2 |
| AS54262US | US-CERT-01 - CERTUSOFT INC | 512 | — | 2 |
| AS14700US | NEXURE-AS14700 - Nexure Solutions LLP | 512 | — | 2 |
| AS63164US | TGNA-WWL-WUPL - TEGNA Inc. | 512 | — | 2 |
| AS395772US | AHC-AS - Augusta Health Care, Inc | 512 | — | 2 |
| AS26148US | CSMPR - Cooperativa de Seguros Multiples de Puerto Rico | 512 | — | 2 |
| AS399458US | COMARCH-NET-US-1 - Comarch Inc | 512 | — | 2 |
| AS393929US | SIMPATICO - Simpatico Systems | 512 | — | 2 |
| AS54277US | SSG - SUPPORT SERVICES GROUP, INC. | 512 | — | 2 |
| AS63167US | TGNA-KING-KONG - TEGNA Inc. | 512 | — | 2 |
| AS20446US | DUKELANA-20446 - Dukelana | 512 | 5 | 7 |
| AS16653US | CVENT - Cvent, Inc. | 512 | 1 | 3 |
| AS396439US | HCAA-ASN01 - Hillsborough County Aviation Authority | 512 | — | 2 |
| AS32284US | CORP-BASHAS-AS1 - Bashas' Inc. | 512 | — | 2 |
| AS2636US | LOUISVILLE-MSD-ASN-01 - LOUISVILLE AND JEFFERSON COUNTY METROPOLITAN SEWER DISTRICT | 512 | — | 1 |
| AS396522US | EMAME-INET-1 - Versant Power | 512 | — | 2 |
| AS27279US | ASCENSION-MDBAL - Ascension Technologies | 512 | — | 2 |
| AS46259US | CTDN-AS - Donor Network West | 512 | — | 2 |
| AS397999US | TGNA-WPMT - TEGNA Inc. | 512 | — | 2 |
| AS33347US | NAVICENT - NAVICENT HEALTH | 512 | — | 2 |
| AS393697US | HUBUSILEGVDCSUB - Hub International | 512 | — | 2 |
| AS397600US | BANKOZK-DALLAS - Bank OZK | 512 | — | 2 |
| AS394679US | GENERAC - Generac Power Systems, Inc. | 512 | — | 2 |
| AS399687US | DEFIN-AS - Def, Inc | 512 | — | 2 |
| AS46971US | FIBXTERNALIP - First Interstate Bank | 512 | — | 2 |
| AS1445US | MILLIMAN - Milliman, Inc. | 512 | — | 1 |
| AS402444US | LUMMI-NATION-CONNECT - Lummi | 512 | 65.5K | 2 |
| AS393914US | INVITAE-01 - Invitae Corp | 512 | — | 2 |
| AS47754US | SQP-AS Squarepoint OPS LLC | 512 | — | 2 |
| AS398374US | NSL-ASN - Pro-Mark, LLC | 512 | — | 2 |
| AS13747US | DMIC-ASN1 - DONEGAL MUTUAL INSURANCE | 512 | — | 2 |
| AS30009US | FAPS - First American Payment Systems Inc. | 512 | — | 2 |
| AS40534US | AM-AVK-MINDEN - American AVK Company | 512 | — | 2 |
| AS18889US | CITY-OF-RUSTON - City of Ruston | 512 | — | 1 |
| AS33141US | NOCSERVICES - NOC SERVICES CORP. | 512 | — | 2 |
| AS29726US | VONAGE-02 - Vonage Holdings, Inc. | 512 | — | 2 |
| AS397975US | BRITEFISH-01 - Realnets | 512 | — | 2 |
| AS36565US | COUNTY-OF-MONTGOMERY-PA - County of Montgomery | 512 | — | 2 |
| AS40227US | IPNS-LAB - IP Networked Services Inc. | 512 | — | 2 |
| AS23045US | ASKOH1 - Kohler Co. | 512 | — | 2 |
| AS401363US | LYNCROSS - Lyncross LLC | 512 | 2 | 4 |