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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. | 211.2M | 21,260 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,265 |
| 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 | 413 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,727 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,958 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,328 |
| IP4HOST-2026 - ip4host.com |
| — |
| — |
| 0 |
| AS402358US | ASN-EEOC - U. | — | — | 0 |
| AS402477US | CHS-RCH - Concentra | — | — | 0 |
| AS402483US | SAFEGUARDING-CIV-001 - Dragos | — | — | 0 |
| AS402556US | HFISL-1-BASE-01 - Hudson | — | — | 0 |
| AS402578US | SERVER-GALACTIC-USA - Server | — | — | 0 |
| AS141US | DNIC-AS-00141 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS214US | DNIC-AS-00214 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS221US | WRALC-HOSTNET-AS - Air Force Systems Networking | — | — | 0 |
| AS227US | DNIC-AS-00227 - Headquarters, USAISC | — | — | 0 |
| AS417US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS431US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS493US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS516US | KODAK-BTC - Eastman Kodak Boston Technology Center | — | — | 0 |
| AS519US | ISCNET - Systemhouse/INTERACTIVE Systems | — | — | 0 |
| AS532US | DNIC-AS-00532 - United States Department of Defense (DoD) | — | — | 0 |
| AS562US | HPINC - HP Inc. | — | — | 0 |
| AS625US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS638US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS666US | CTNOSC-ASN-666 - Headquarters, USAISC | — | — | 0 |
| AS707US | ELAN-AS - Air Force Systems Networking | — | — | 0 |
| AS727US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |
| AS730US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |
| AS743US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |
| AS753US | MERIT-AS-19 - Merit Network Inc. | — | — | 0 |
| AS787US | DNIC-AS-00787 - United States Department of Defense (DoD) | — | — | 0 |
| AS795US | AMERITECH-AS - AT&T Services, Inc. | — | — | 0 |
| AS942US | FORK-AUX - FORK SYSTEMS | — | — | 0 |
| AS948US | JANTECHCS-AS - JanTech Computer Services | — | — | 0 |
| AS962US | UBERDUCK-ANYCAST - Uberduck, LLC | — | — | 0 |
| AS1020US | MWC-CHI-UUN - Midwest Cable | — | — | 0 |
| AS1028US | RO-LV-IL - Rosier Official | — | — | 0 |
| AS1220US | INFOASN-AS - INFONET Services Corporation | — | — | 0 |
| AS1242US | PLH-AS - Air Force Systems Networking | — | — | 0 |
| AS1298US | DNIC-AS-01298 - United States Department of Defense (DoD) | — | — | 0 |
| AS1310US | CACI-FED - CACI Inc., Federal | — | — | 0 |
| AS1314US | DNIC-AS-01314 - United States Department of Defense (DoD) | — | — | 0 |
| AS1363US | DNIC-AS-01363 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1381US | ANSBB-ASNNET-2 - Verizon Business | — | — | 0 |
| AS1388US | ANSBB-ASNNET-2 - Verizon Business | — | — | 0 |
| AS1431US | ALLCONET - Allegany County Public Schools | — | — | 0 |
| AS1470US | DNIC-ASBLK-01469-01470 - Headquarters, USAISC | — | — | 0 |
| AS1471US | DNIC-ASBLK-01471-01472 - Headquarters, USAISC | — | — | 0 |
| AS1526US | DNIC-ASBLK-01522-01526 - Headquarters, USAISC | — | — | 0 |
| AS1535US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | — | — | 0 |
| AS1676US | AMERI - Trane US INC. | — | — | 0 |
| AS1763US | THEHARTFORD - HARTFORD FIRE INSURANCE COMPANY | — | — | 0 |