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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 |
| AS397854US | SARATOGAHOSP - Saratoga Hospital | 256 | — | 1 |
| AS395186US | POP - POP | 256 | — | 1 |
| AS16407US | LINDEN-ADVISORS - Linden Investors LP | 256 | — | 1 |
| AS36855US | LDI-ASN-01 - Louisiana Department of Insurance | 256 | — | 1 |
| AS397794US | APPLAUSE-MARLBORO - Applause | 256 | — | 1 |
| AS400435US | EAGLE-WIRELESS - Eagle Wireless LLC | 256 | — | 1 |
| AS40862US | ASN-EFX - ELECTRONIC FUNDS TRANSFER CORP. | 256 | — | 1 |
| AS25973US | AS-GTT-25973 - PacketExchange, Inc | 256 | 1 | 2 |
| AS394570US | ALASU - Alabama State University | 256 | 65.5K | 2 |
| AS21986US | WPP-ET-CAMPUS-WASHINGTONDC - Young & Rubicam LLC | 256 | — | 1 |
| AS401566US | MONTVIRIDIAN-01 - Montviridian LLC | 256 | 4.1K | 2 |
| AS399539US | COTTAGE-HEALTH01 - Cottage Health | 256 | — | 1 |
| AS54558US | HONL-621 - Healthcare Outsourcing Network, L.L.C | 256 | — | 1 |
| AS11304US | BMH-ASN - Prisma Health | 256 | — | 1 |
| AS35619US | MHS-331-35619 - Amergis Healthcare Staffing, Inc. | 256 | — | 1 |
| AS402352US | LM-ADM-001 - Admail.net | 256 | — | 1 |
| AS3515US | DSI-WR - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS400855US | AVD-PRINCETON - Advantage Voice & Data, LLC | 256 | — | 1 |
| AS393382US | KERNHEALTHSYSTEMS - Kern Family Health Care | 256 | — | 1 |
| AS399890US | AVX - AVX Networks | 256 | — | 1 |
| AS399232US | SETON-HOME - Seton Home Study School | 256 | — | 1 |
| AS395939US | CCHWYO-AS395939 - Campbell County Health | 256 | — | 1 |
| AS397008US | WBC-ASN-01 - Weigel Broadcasting Co | 256 | — | 1 |
| AS54352US | CXP - Click Bond, Inc. | 256 | — | 1 |
| AS393462US | COLLETTE-HEALTH - Collette Health, LLC | 256 | 1 | 2 |
| AS32928US | ITECHTOOL-ASN-LAH - ITechTool Incorporated | 256 | — | 1 |
| AS20420US | DV - Digital Ventures, LLC | 256 | 2 | 3 |
| AS40368US | NIXCON-GROUP-LLC - Nixcon | 256 | — | 1 |
| AS402522US | TAL-ASN - TACKLE | 256 | — | 1 |
| AS393751US | COUNTY-OF-BERKS - County of Berks | 256 | — | 1 |
| AS198015US | INOXWEB-LLC Inoxweb LLC | 256 | — | 1 |
| AS672US | DNIC-AS-00672 - Headquarters, USAISC | 256 | — | 1 |
| AS394022US | LCSD-ASN - Lyon County School District | 256 | — | 1 |
| AS399613US | SMESTADTECH-01 - Smestad Tech LLC | 256 | 3 | 3 |
| AS394132US | CASCADEMICROTECH - Cascade Microtech, Inc. | 256 | — | 1 |
| AS26875US | HBT-AS-01 - Heartland Bank and Trust Company | 256 | — | 1 |
| AS402117US | WHITE-TIE-PRODUCTIONS - White Tie Productions LLC | 256 | — | 1 |
| AS18610US | SEQUOIA-AS - Sequoia Capital | 256 | — | 1 |
| AS22760US | ECNMEDIA - Entertainment Communications Network, Inc. | 256 | — | 1 |
| AS30555US | VSCP01 - VariSpace Coppell, LLC | 256 | — | 1 |
| AS402397US | 17SOLUTIONS-LLC - 17 | 256 | 1 | 2 |
| AS395028US | REY1 - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS1508US | DNIC-AS-01508 - Headquarters, USAISC | 256 | 1 | 2 |
| AS16844US | ENTRATA - Entrata | 256 | — | 1 |
| AS31787US | MPORTHO - Microport Orthopedics, Inc. | 256 | — | 1 |
| AS202934US | MUNTEANU-AS SINCITY HOSTING LLC | 256 | 1 | 2 |