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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| 1 |
| 2 |
| AS63046US | BRAVE - Brave Software, Inc. | 256 | — | 1 |
| AS399914US | N-LAB - N-LAB | 256 | 2 | 3 |
| AS18470US | GL-GFASN-01 - GraceWorks, LLC | 256 | 17 | 3 |
| AS395317US | RISPA - Rhode Island State Police | 256 | — | 1 |
| AS394382US | EL-DALLAS - Elevated Computing LLC | 256 | — | 1 |
| AS46900US | REPC-AS - Rushmore Electric Power Cooperative, Inc. | 256 | 256 | 2 |
| AS25788US | CPL-AS - Centerview Partners, LLC | 256 | — | 1 |
| AS395728US | PHX-ASN - District Photo, Inc. | 256 | — | 1 |
| AS14885US | RAND-GRAPHICS - Rand Graphics, Inc. | 256 | — | 1 |
| AS54403US | EOA-WATR-01 - Essense of Australia, Inc. | 256 | — | 1 |
| AS397830US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS892US | EBSI-ISP-FO-01 - Emergent Biosolutions | 256 | — | 1 |
| AS30242US | SAMSA - SAMSA | 256 | — | 1 |
| AS33246US | BLC-AS - Bethany Lutheran College | 256 | 1 | 2 |
| AS393843US | WPLG-TV - WPLG-TV | 256 | — | 1 |
| AS396261US | UNIVERSITY-OF-KENTUCKY-RESEARCH-COMPUTING - University of Kentucky Research Computing | 256 | — | 1 |
| AS14879US | PARIS-AS - PARIS ACCESSORIES INC. | 256 | — | 1 |
| AS395484US | PETCO-NSC - Petco | 256 | — | 1 |
| AS26759US | SAGOFIBER-01 - Sago Fiber LLC | 256 | 65.5K | 2 |
| AS32207US | MIDDLESEX-HOSPITAL - MIDDLESEX HEALTH SYSTEM, INC. | 256 | — | 1 |
| AS6129US | XAXIS-AS1 - mPlatform LLC | 256 | — | 1 |
| AS36036US | M-FINANCIAL - M Financial Group | 256 | — | 1 |
| AS54894US | SRA-NY-9W57 - Summit Rock Advisors, LLC | 256 | — | 1 |
| AS396380US | AS-ACCESSLA - ACCESS SERVICES | 256 | — | 1 |
| AS30611US | COMPASS-ROSE-LLC - Compass Rose Asset Management, LP | 256 | — | 1 |
| AS198015US | INOXWEB-LLC Inoxweb LLC | 256 | — | 1 |
| AS33115US | RU-NET - Rulogic Inc. | 256 | — | 1 |
| AS54516US | T3TRADING - T3 Trading Group LLC | 256 | — | 1 |
| AS395841US | TAMCLOUD - tamCloud, Inc. | 256 | 4.1K | 2 |
| AS16782US | CORELAB-AS - Core Laboratories | 256 | — | 1 |
| AS16850US | SMITH-WESSON - Smith & Wesson | 256 | — | 1 |
| AS397919US | NETSPI-CORPORATE - NetSPI | 256 | 16 | 2 |
| AS26172US | CREDIT-INDUSTRIEL-ET-COMMERCIAL - Credit Industriel Et Commercial | 256 | — | 1 |
| AS402260US | DR-ASN01 - University of Colorado Medicine | 256 | — | 1 |
| AS36155US | RAMCHEALTH - Reedsburg Area Medical Center Inc. | 256 | — | 1 |
| AS397413US | SAISD - San Antonio Independent School District | 256 | — | 1 |
| AS393438US | CMWD - Calleguas Municipal Water District | 256 | — | 1 |
| AS14272US | MCPC-ASN - MCPc Inc. | 256 | — | 1 |
| AS62873US | SEQ-NET - Sequris Group, LLC | 256 | — | 1 |
| AS402522US | TAL-ASN - TACKLE | 256 | — | 1 |
| AS14132US | BLUEMATRIX-AS-BLUEMATRIX-INC - Blue Matrix I LLC | 256 | — | 1 |
| AS401724US | HAMILTON-CONNECTS - Hamilton Connects | 256 | 65.5K | 2 |
| AS395618US | QUEENS-HEALTH-SYSTEM - The Queen's Medical Center | 256 | — | 1 |
| AS47073US | JCPA-AS - The Jackson Clinic, P.A. | 256 | — | 1 |
| AS401986US | COHERENTLY - Coherently Inc | 256 | 65.5K | 2 |
| AS33648US | INTERNET-LLC - Patriot Broadband | 256 | 1.5K | 7 |