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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,109 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,430 |
| 256 |
| 1 |
| 2 |
| AS40255US | AS40255 - Brigade Capital Management, LP | 256 | — | 1 |
| AS398366US | LINKUP - Linkup Communications Corporation | 256 | — | 1 |
| AS15338US | CEROBI - CEROBI LLC | 256 | — | 1 |
| AS394272US | SP-ASN01 - Servpro Industries, Inc. | 256 | — | 1 |
| AS398428US | NMTRANS-HQ-AS01 - N&M Transfer Co., Inc. | 256 | — | 1 |
| AS16752US | EZXAS - EZX, Inc. | 256 | — | 1 |
| AS63406US | GVEA-01 - Golden Valley Electric Association, Inc. | 256 | 256 | 2 |
| AS399694US | BRTNBB-TX01 - BRIGHTON BROADBAND INC. | 256 | 65.5K | 2 |
| AS401313US | NOVACOAST - Novacoast Inc | 256 | 1 | 2 |
| AS46769US | TELECAST COMMUNICATIONS - Telecast Communications | 256 | — | 1 |
| AS16627US | BCCA-AS - Board of Commissioners of the County of Allen | 256 | — | 1 |
| AS63013US | EHRTECH-N1 - EHR Technology Group, L.L.C. | 256 | — | 1 |
| AS21611US | NET-WSGWIN - Wilson Sporting Goods Co. | 256 | — | 1 |
| AS396898US | BMG-ASN - Capital City Home Loans | 256 | — | 1 |
| AS55278US | CIG-ASN - California Capital Insurance Company | 256 | — | 1 |
| AS53438US | VB-ASN-01 - Vantage Bank | 256 | — | 1 |
| AS401983US | BINGHAM-MEMORIAL-HOSPITAL - Bingham Memorial Hospital | 256 | 256 | 2 |
| AS393569US | 9-11-MEMORIAL - 9/11 MEMORIAL | 256 | — | 1 |
| AS11768US | GRYPHO5-02 - Grypho5, LLC | 256 | — | 1 |
| AS14784US | STCU - SPOKANE TEACHERS CREDIT UNION | 256 | — | 1 |
| AS54421US | WARTBURG-COLLEGE - Wartburg College | 256 | — | 1 |
| AS199745US | terrible terrible llc | 256 | 1 | 2 |
| AS400739US | COM-NOC - City of Mishawaka | 256 | — | 1 |
| AS397830US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS399914US | N-LAB - N-LAB | 256 | 2 | 3 |
| AS62510US | NESATX - North East Independent School District | 256 | — | 1 |
| AS400801US | BISTATEDEVELOPMENT - Bi-State Development Agency of the Missouri-Illinois Metropolitan District | 256 | — | 1 |
| AS36268US | BUNNY - Bunny & Tomato Interconnect, Inc. | 256 | 1 | 2 |
| AS393510US | SFHSH-ASNUMBER - St Francis Healthcare System of Hawaii | 256 | — | 1 |
| AS14427US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | 4.1K | 3 |
| AS54730US | BSA-ASN1 - BS&A Software, LLC | 256 | — | 1 |
| AS395612US | MC-ALA-ORG - Montgomery County Commission | 256 | — | 1 |
| AS62924US | COBNET-ASN-1 - City of Bryan, Texas | 256 | — | 1 |
| AS22620US | BOARDPENSIONS-PRESBYTERIAN - The Board of Pensions of the Presbyterian Church (USA) | 256 | — | 1 |
| AS402028US | ZEPHYR-BROADBAND - Zephyr Broadband, LLC | 256 | 8.2K | 3 |
| AS399384US | MISSION-HILLS-CHURCH - Mission Hills Church | 256 | — | 1 |
| AS401858US | ATTITUDEONLINE - Attitude Online | 256 | — | 1 |
| AS63189US | ANDESASERVICESINC - Andesa Services, Inc | 256 | — | 1 |
| AS399292US | UAMTCORP-01 - UAM Technologies Corp | 256 | — | 1 |
| AS396493US | FTAUS - FIRST TRUST PORTFOLIOS LP | 256 | — | 1 |
| AS396332US | S1-FLINT-DC - SITEONE LANDSCAPE SUPPLY, LLC | 256 | — | 1 |
| AS14790US | CAMERON - Cameron Memorial Community Hospital Inc | 256 | — | 1 |
| AS398062US | SPTA-1-AS-1 - Southeastern Pennsylvania Transportation Authority | 256 | — | 1 |
| AS27339US | HRL-LAX-01 - HRL Laboratories, LLC | 256 | — | 1 |
| AS62501US | SA10 - Security Arsenal | 256 | 1 | 2 |
| AS19405US | HRSD-INTERNET-IP-BLOCK - Hampton Roads Sanitation District | 256 | — | 1 |