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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 | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 256 |
| — |
| 1 |
| AS396280US | CASENETLLC - Casenet, LLC | 256 | — | 1 |
| AS400189US | PACKETCOVE-AS400189 - PacketCove, LLC | 256 | — | 1 |
| AS402473US | RURALNET - Ruralnet | 256 | — | 1 |
| AS400014US | PRISEDA-ABQ - Priseda LLC | 256 | — | 1 |
| AS394050US | KIRBTECH - Kirbtech LLC | 256 | — | 1 |
| AS19859US | FLAIR-DATA-SYSTEMS - Flair Data Systems | 256 | — | 1 |
| AS393904US | CGTNV - Century Gaming Technologies | 256 | — | 1 |
| AS62565US | INXOPEN - INX Open LLC | 256 | — | 1 |
| AS395271US | TBOSA-SAT-HQ - The Bank of San Antonio | 256 | — | 1 |
| AS54410US | BDHS-AS - Bozeman Deaconess Health Services | 256 | — | 1 |
| AS11174US | AS-ATHEN-1 - Athenahealth | 256 | — | 1 |
| AS398567US | LIGHTING-READY-HOSTING-LLC - Lightning Ready Hosting, LLC | 256 | — | 1 |
| AS32048US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS400121US | CFBTEL - CFBTEL | 256 | — | 1 |
| AS397462US | CSPI-MSP-1 - CSPi Technology Solutions | 256 | — | 1 |
| AS64283US | FLORIDAPOLY - Florida Polytechnic University | 256 | — | 1 |
| AS27335US | BLUERIDGE-01 - Blueridge Capital, L.L.C. | 256 | — | 1 |
| AS27296US | WU-PRIMARY - Wilmington University, Inc. | 256 | — | 1 |
| AS11823US | LORDABBETTCO - Lord, Abbett & Co. | 256 | — | 1 |
| AS395274US | LAKE-TRAVIS-ISD - Lake Travis ISD | 256 | — | 1 |
| AS53925US | CBWE-COMM-IMDCPHX1 - CBWE Communications, LLC | 256 | — | 1 |
| AS36338US | BUCKS - Milwaukee Bucks, LLC | 256 | — | 1 |
| AS396849US | KPRC - GRAHAM MEDIA GROUP, HOUSTON, INC. | 256 | — | 1 |
| AS401782US | BOKU-ASN-01 - Boku, Inc. | 256 | — | 1 |
| AS398031US | JOSCOR-OE-1 - Joscor LLC | 256 | 1 | 2 |
| AS19817US | MIU-IA - Maharishi International University | 256 | — | 1 |
| AS54687US | IQLUSION - iqlusion | 256 | — | 1 |
| AS32170US | SLVRMC - San Luis Valley Regional Medical Center | 256 | 1 | 2 |
| AS399460US | HELIUS - Helius | 256 | — | 1 |
| AS401517US | APEX-EQUINIX-ASN - Apex Systems, LLC | 256 | — | 1 |
| AS46565US | COC-AS - City of Columbia | 256 | — | 1 |
| AS32426US | WV-SCHOOL-OF-OSTEOPATHIC-MEDICINE - WV School of Osteopathic Medicine | 256 | — | 1 |
| AS405US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS400865US | TRICKSOLUTIONS - Trick Solutions | 256 | 256 | 2 |
| AS62797US | CASTO-250CIVICCENTER - CASTO Management Services inc | 256 | — | 1 |
| AS394553US | SARC-01 - Samsung Austin Research and Development Center | 256 | — | 1 |
| AS400151US | SPARC-BROOKS-BROTHERS - BB OPCO LLC | 256 | — | 1 |
| AS402479US | DECENTRA - Decentra | 256 | — | 1 |
| AS19469US | JSL-ASN-01 - Jeanswear Services LLC | 256 | — | 1 |
| AS394095US | LUCASMUSEUM-BGP-2024 - Lucas Museum of Narrative Art | 256 | — | 1 |
| AS10248US | BLUE-RIDGE-BANKSHARES-ASN - Blue Ridge Bankshares, Inc. | 256 | — | 1 |
| AS13785US | SMH - SHORE MEMORIAL HOSPITAL | 256 | — | 1 |
| AS11460US | ZALECORP - Zale Delaware, Inc. | 256 | — | 1 |
| AS22425US | FL-AS - Finish Line | 256 | — | 1 |
| AS1084US | IMIL-4-NETWORK - Intermountain Medical Imaging | 256 | — | 1 |
| AS17194US | LPGAHQ - LPGA | 256 | — | 1 |