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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 |
| 512 |
| — |
| 1 |
| AS400306US | PHEAA-141200 - PHEAA, AES, FedLoan Servicing | 512 | — | 2 |
| AS4985US | PGWORKS - PHILADELPHIA GAS WORKS | 512 | — | 2 |
| AS5036US | WCA - Whalley Computer Associates | 512 | — | 2 |
| AS40263US | BCS-1 - Bear Cloud Solutions, Inc. | 512 | 1 | 3 |
| AS199518US | GSHAPIRO-AS Gregory Shapiro | 512 | 19 | 21 |
| AS26109US | L-PERRIGO-GLOBAL - L. Perrigo Company | 512 | — | 1 |
| AS396939US | AANIIN - Fond du Lac Band of Lake Superior Chippewa | 512 | — | 1 |
| AS20193US | MODTECHGROUP - SineWave Technologies, Inc. | 512 | — | 2 |
| AS395513US | WAB-PUBLIC - Woori America Bank | 512 | — | 2 |
| AS17085US | AS-STOPLLC - SATELLITE TRACKING OF PEOPLE | 512 | — | 1 |
| AS40617US | HPE-AI-CLOUD - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 2 |
| AS36467US | MAINLINE-INFORMATION-SYSTEMS - Mainline Information Systems Inc. | 512 | — | 2 |
| AS400157US | ENL-ASN-EASTMAN-CHEMICAL - Eastman Chemical Company | 512 | — | 2 |
| AS398809US | OSW - One Spa World LLC | 512 | — | 1 |
| AS395849US | OXIDE - Oxide Computer Company | 512 | 1 | 3 |
| AS395126US | BECKS - Beck's Superior Hybrids, Inc. | 512 | — | 2 |
| AS46307US | CENTAURI - Centauri Solutions, LLC | 512 | 2.1K | 8 |
| AS53851US | PAMPEREDCHEF - The Pampered Chef, Ltd. | 512 | — | 2 |
| AS398195US | BARSTOOL-SPORTS - Barstool Sports, Inc. | 512 | — | 2 |
| AS397308US | EAB-ASN-EASTMAN-CHEMICAL - Eastman Chemical Company | 512 | — | 2 |
| AS399187US | COB-MN-US - City of Bloomington | 512 | — | 2 |
| AS396915US | AIRE-INTERNET-01 - Net Vision Communications, LLC | 512 | — | 1 |
| AS393613US | VACU-ASN-1 - Virginia Credit Union, Inc. | 512 | — | 2 |
| AS397719US | TECHSTYLE-FASHION-GROUP - TechStyle, Inc. | 512 | — | 2 |
| AS54834US | CDP - CUSTOM DATA PROCESSING | 512 | — | 2 |
| AS36437US | SCC-44 - County of Santa Cruz | 512 | — | 2 |
| AS17317US | THING5-NA - Thing5, LLC | 512 | — | 2 |
| AS393658US | ATYPON - Atypon Systems, Inc. | 512 | 1 | 2 |
| AS30390US | IMERYS-UK-PARMOOR-ASNUMBER - Imerys Pigments | 512 | — | 2 |
| AS397323US | MEM - MISSOURI EMPLOYERS MUTUAL INSURANCE COMPANY | 512 | — | 2 |
| AS396391US | GUILFORD-COLLEGE - Guilford College | 512 | — | 2 |
| AS394450US | MCKINSEY-US-ADP - McKinsey & Company, Inc. | 512 | — | 2 |
| AS54143US | HEHENET - i9 Technologies | 512 | 65.5K | 3 |
| AS36309US | LG-NET - LOUIS GLICK INTERNATIONAL LTD. | 512 | — | 2 |
| AS400586US | RDM-TECH - rdm.tech | 512 | 256 | 3 |
| AS54822US | R1RCM - Intermedix | 512 | — | 2 |
| AS393518US | CLAIMREMEDI-AS - ClaimRemedi, Inc. | 512 | — | 2 |
| AS395918US | SIL-MAIN-AS - Sandestin Investments LLC | 512 | — | 2 |
| AS63325US | CARRIAGESERVICESAS - Carriage Services, Inc. | 512 | — | 2 |
| AS30116US | WNI-NORMAN - WEATHERNEWS AMERICA INC. | 512 | — | 2 |
| AS46640US | NWNCOMM - NWN Corporation | 512 | — | 2 |
| AS27437US | IGN - IGN Entertainment | 512 | — | 2 |
| AS62959US | INNOVSYS-1 - Innovative Systems LLC | 512 | — | 2 |
| AS400357US | SOUTHCOAST-HEALTH-01 - Southcoast Health System, Inc. | 512 | — | 2 |
| AS54691US | FCSA-AS - Farm Credit Services of America | 512 | — | 2 |
| AS3952US | TELLABS-ASN - Nokia of America Corporation | 512 | — | 1 |