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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 8X8-AS-CORP - 8x8, Inc. |
| 256 |
| — |
| 1 |
| AS397169US | FFFCU - Firefighters First Federal Credit Union | 256 | — | 1 |
| AS16627US | BCCA-AS - Board of Commissioners of the County of Allen | 256 | — | 1 |
| AS6921US | ARACHNITEC - Arachnitec, INC. | 256 | — | 1 |
| AS393352US | CITY-OF-LAREDO - CITY OF LAREDO | 256 | — | 1 |
| AS26997US | GPJOSEPH - Joseph Hage Aaronson LLC | 256 | — | 1 |
| AS19911US | SECURITYSERVICES - Vercara, LLC | 256 | — | 1 |
| AS1258US | XKL-NET-AS - XKL, LLC | 256 | — | 1 |
| AS400843US | AUDACY - Audacy | 256 | — | 1 |
| AS32576US | LOANMART - 1-800LoanMart | 256 | — | 1 |
| AS12048US | HALLCON-ASN-01 - Hallcon Corporation | 256 | — | 1 |
| AS12036US | POE - Poe Foundation | 256 | 256 | 2 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS2738US | AS-SHIELDS-COM - Shields Health Care Group | 256 | — | 1 |
| AS399536US | PROGRESSBIZ-BGP - Progress Business Systems, Inc. | 256 | — | 1 |
| AS29718US | TNEMEC-AS - Tnemec Company Incorporated | 256 | — | 1 |
| AS53331US | IMPERIAL-CAPITAL-GROUP-LLC - Imperial Capital Group LLC | 256 | — | 1 |
| AS399914US | N-LAB - N-LAB | 256 | 2 | 3 |
| AS18473US | EC-BACKUP - Spring View Hospital | 256 | — | 1 |
| AS16859US | NAPHCARE-INC - NaphCare, Inc. | 256 | — | 1 |
| AS395308US | ALPINE-INTERNET - Alpine Internet | 256 | 4.1K | 2 |
| AS23478US | CHAS-HEALTH - CHAS Health | 256 | — | 1 |
| AS399813US | LAER-AS-MEL1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS398818US | NORTH-LAUDERDALE-WIRELESS-INTERNET - North Lauderdale Water Association, Inc. | 256 | — | 1 |
| AS18821US | IOSOCKET-CLOUD - Iosocket LLC | 256 | — | 1 |
| AS54025US | CAPELLAUNIVERSITY - Capella University | 256 | — | 1 |
| AS53819US | PICTOMETRY-1 - PICTOMETRY INTERNATIONAL CORP. | 256 | — | 1 |
| AS40255US | AS40255 - Brigade Capital Management, LP | 256 | — | 1 |
| AS394668US | STMARYSMEDICALCENTER-2900 - St. Mary's Medical Center, Inc. | 256 | — | 1 |
| AS16588US | POLITICO - Politico, LLC | 256 | — | 1 |
| AS400179US | PDQCOM - PDQ.com Corporation | 256 | 2 | 3 |
| AS399613US | SMESTADTECH-01 - Smestad Tech LLC | 256 | 3 | 3 |
| AS402317US | RP-GLOBAL - Medical | 256 | — | 1 |
| AS27339US | HRL-LAX-01 - HRL Laboratories, LLC | 256 | — | 1 |
| AS23055US | CITYOFNAMPA - City of Nampa | 256 | — | 1 |
| AS63046US | BRAVE - Brave Software, Inc. | 256 | — | 1 |
| AS14790US | CAMERON - Cameron Memorial Community Hospital Inc | 256 | — | 1 |
| AS19277US | IMAGEMASTER-01 - ImageMaster LLC | 256 | — | 1 |
| AS11009US | CARLOWUNIV - Carlow University | 256 | — | 1 |
| AS400131US | QCRH-AS - QCR Holdings, Inc. | 256 | — | 1 |
| AS399607US | LCPS-VA - Louisa County Public Schools | 256 | — | 1 |
| AS399807US | MERBIO-01 - Meridian Bioscience Inc. | 256 | — | 1 |
| AS394888US | WOW-LOGISTICS-A - WOW Logistics Company | 256 | — | 1 |
| AS30117US | SJC-CLASSIC - Classic Vacations, LLC | 256 | — | 1 |
| AS33428US | NHS-39AS - The New-York Historical Society | 256 | — | 1 |
| AS395933US | YRMC-AS - Dignity Health, Yavapai Regional Medical Center | 256 | — | 1 |
| AS19268US | MCHEST-NOC-1 - MChest | 256 | — | 1 |