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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| MISERI-COLLEGE-1 - Misericordia University |
| 512 |
| — |
| 2 |
| AS35901US | AVTEX-INC-ASN - Avtex, Inc. | 512 | — | 2 |
| AS398145US | MHM-DATACENTER-01 - Centurion Group, Inc. | 512 | — | 2 |
| AS35008US | KERFUFFLE - Kerfuffle, LLC | 512 | 257 | 4 |
| AS27523US | KAWAII-NETWORKS - Kawaii Networks LLC | 512 | 518 | 10 |
| AS36580US | HATV-DC - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS400503US | DAN-SMITH-LLC - Dan Smith LLC | 512 | 32 | 4 |
| AS1019US | SOTERAHEALTH - Sotera Health | 512 | — | 2 |
| AS2633US | NAS1-AS - National Academy of Sciences | 512 | — | 2 |
| AS402164US | ROFAEL-01 - Rofael Aleezada, Sole Proprietorship | 512 | 1 | 3 |
| AS396492US | DBISP - dbISP, LLC | 512 | — | 2 |
| AS54247US | BATTERY-MANAGEMENT - Battery Ventures | 512 | — | 2 |
| AS17281US | AS-15 - CONSORTIUM FOR WORKER EDUCATION | 512 | — | 2 |
| AS33463US | CITIGROUP-GLOBAL-ANYCAST-DNS - Citigroup Inc. | 512 | — | 2 |
| AS18746US | MIG-BGP - Merchants Insurance Group | 512 | — | 2 |
| AS53869US | KRYPTIQ - Surescripts, LLC | 512 | — | 1 |
| AS40659US | BMW-GDCA-AS - BMW of North America, LLC (Group Data Centers America) | 512 | 2 | 4 |
| AS400452US | UC-DAVIS-HEALTH - University of California Davis Medical Center | 512 | — | 2 |
| AS55111US | CALVERT-COUNTY - Calvert County | 512 | — | 1 |
| AS27023US | NTT-DATA-INC - NTT Data Inc | 512 | — | 2 |
| AS395257US | SINGULARIS-001 - Singularis IT, LLC | 512 | 65.5K | 3 |
| AS32894US | MCWANE - McWane, Inc. | 512 | — | 2 |
| AS60154US | connectria-asn-1 Connectria, LLC | 512 | 524.3K | 3 |
| AS40427US | IRONPORT-SYSTEMS-CI365 - Cisco Systems Ironport Division | 512 | — | 2 |
| AS40117US | YEXT - Yext, Inc. | 512 | — | 2 |
| AS14057US | TFIC-1 - TENNESSEE FARMERS MUTUAL INSURANCE COMPANY | 512 | — | 2 |
| AS10469US | RFGNET - The Ridgefield Group, Inc. | 512 | — | 1 |
| AS400952US | KISSUSA-GA - KISS NAIL PRODUCTS, INC | 512 | — | 2 |
| AS1219US | NCUBE-OREGON-AS - Oracle Corporation | 512 | 1 | 3 |
| AS399574US | RCCD-ASN - Riverside Community College District | 512 | — | 1 |
| AS398380US | DCH-ASN-01 - Driscoll Children's Hospital | 512 | — | 2 |
| AS14786US | ALLURETELECOM - Allure Telecom Inc | 512 | — | 2 |
| AS400101US | AS-RINGFREE - Ringfree Communications, Inc | 512 | — | 2 |
| AS396358US | BUBGP1 - Bellarmine University | 512 | — | 2 |
| AS400964US | COHC - College of the Holy Cross | 512 | — | 2 |
| AS54500US | 18779 - EGIHosting | 512 | — | 2 |
| AS40879US | LOS-ALAMOS-COUNTY - Incorporated County of Los Alamos | 512 | — | 2 |
| AS54986US | FLOWERS - 1-800-Flowers.com, Inc. | 512 | — | 2 |
| AS395123US | CENTRACOM - CENTRACOM INTERACTIVE | 512 | 1 | 3 |
| AS395915US | ENS - Edge Network Services LLC | 512 | 17 | 4 |
| AS36762US | WMOR-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS395188US | SALADASN-01 - US FOODS, INC. | 512 | — | 2 |
| AS395989US | DAYSTAR-3901 - Daystar Television Network | 512 | — | 2 |
| AS54890US | BBIX-USA-NET - BBIX USA, INC. | 512 | — | 1 |
| AS400419US | CNEHS - CARE NEW ENGLAND HEALTH SYSTEM | 512 | — | 2 |
| AS64257US | TXGL1 - trueEX LLC | 512 | — | 2 |
| AS394697US | VSLR - Vivint Solar | 512 | — | 1 |