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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. | 218.1M | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,222 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| CERNET-ASN-BLOCK - California Education and Research Federation Network |
| — |
| — |
| 0 |
| AS4288US | CENTURYLINK-TSDS-NCJCVL - CenturyLink Communications, LLC | — | — | 0 |
| AS4291US | CENTURYLINK-QC-MOE-HELENA - CenturyLink Communications, LLC | — | — | 0 |
| AS4312US | FYI - FYI Networks | — | — | 0 |
| AS4360US | AGNES-SCOTT - Agnes Scott College | — | — | 0 |
| AS4369US | IQUEST-ASN - InterQuest Inc. | — | — | 0 |
| AS4487US | EMTF-UPW - Air Force Systems Networking | — | — | 0 |
| AS4490US | EMTF-LAK - Air Force Systems Networking | — | — | 0 |
| AS4562US | INTEX - Intex-Net | — | — | 0 |
| AS4873US | EATON-CORPORATION-2 - Eaton Corporation | — | — | 0 |
| AS4875US | LMC - Long Motor Corporation | — | — | 0 |
| AS4908US | AS-CONCENTRIC - Verizon Business | — | — | 0 |
| AS4942US | B-NET - B-Net Technologies | — | — | 0 |
| AS4950US | ASN-SPRN-NYSERNET1 - SPRINT, Business Serices Group | — | — | 0 |
| AS4984US | INGRESS - Ingress Communications, Inc. | — | — | 0 |
| AS5055US | WANET - Software Design Associates | — | — | 0 |
| AS5073US | HPINC - HP Inc. | — | — | 0 |
| AS5150US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5194US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5207US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5244US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5246US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5318US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5326US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5336US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5373US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5649US | KEVNET-ASN - Kevin Communication Services | — | — | 0 |
| AS5657US | NOVAIAC-ASN - FC Business Systems | — | — | 0 |
| AS5679US | PBI-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS5684US | GANNETT-NET - Gannett Company, Inc. | — | — | 0 |
| AS5695US | MAILROOM-NT - Allen Bradley Inc. | — | — | 0 |
| AS5700US | XL-NET - MISHA, Inc. | — | — | 0 |
| AS5712US | RCN-AS4 - RCN | — | — | 0 |
| AS5759US | RAINSTORM - Storm Network Systems, LLC | — | — | 0 |
| AS5768US | ICANECT - ICANECT | — | — | 0 |
| AS5804US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5822US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5832US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5863US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5866US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5869US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5870US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5899US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5900US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5902US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5909US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5923US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |