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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. | 218M | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,143 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| — |
| — |
| 0 |
| AS27644US | THREATSTOP - ThreatSTOP | — | 18 | 3 |
| AS5276US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5689US | HOOSIERNET - HoosierNet, Inc. | — | — | 0 |
| AS5634US | MILESTONE - Milestone Research and Development Labs Inc. | — | — | 0 |
| AS10300US | NETSPEAK - NetSpeak Corporation | — | — | 0 |
| AS5912US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5226US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS6096US | SYSNET-1 - Sysnet Corp | — | — | 0 |
| AS197992US | DEFSOLUTION-LLC DEFSOLUTION LLC | — | 7.9M | 15 |
| AS10637US | TROYSAT - Troy Systems | — | — | 0 |
| AS5881US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5798US | SUPERLATIVE - Superlative, Inc. | — | — | 0 |
| AS183US | MERIT-AS-3 - Merit Network Inc. | — | — | 0 |
| AS402878US | GENESYS-CLOUD-00 - Genesys | — | — | 0 |
| AS19388US | TEAM-CYMRU-3 - Team Cymru Inc. | — | 1 | 1 |
| AS472US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS402662US | SEERAPPSASN1 - SeerApps | — | — | 0 |
| AS402575US | JMT-HVMD - Johnson, | — | — | 0 |
| AS402513US | AIRWAVE-AS - Airwave | — | — | 0 |
| AS253US | NTTA-253 - NTT America, Inc. | — | — | 0 |
| AS22400US | WEB2OBJECTS - Web2Objects LLC | — | 2 | 1 |
| AS1455US | DNIC-ASBLK-01451-01456 - Headquarters, USAISC | — | — | 0 |
| AS49548US | NSA-NET NSA Networks LLC | — | 34 | 4 |
| AS6038US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS4332US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4394US | DSI-CUST-BLK2 - Houston Associates, Inc. | — | — | 0 |
| AS4388US | COGENT-4388 - Cogent Communications, LLC | — | — | 0 |
| AS4233US | DWRSCADA - State of Caligornia | — | — | 0 |
| AS4255US | BAIN - Bain And Company | — | — | 0 |
| AS960US | ORTHOFIX-IDC - Orthofix Medical INC | — | — | 0 |
| AS10335US | RELAYTECH - Relay Technology, Inc | — | — | 0 |
| AS8170US | MICROAGE - MicroAge Computer Centers, Inc. | — | — | 0 |
| AS197867US | WONG-AS FELIX WONG TRADING AS FANTASTIC HOMEWARE USA CO | — | 256 | 1 |
| AS1260US | PLE - Air Force Systems Networking | — | — | 0 |
| AS8050US | DNC-AS - Direct NET Communications | — | — | 0 |
| AS1346US | DNIC-AS-01346 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1333US | ANSBB-ASNNET-1 - Verizon Business | — | — | 0 |
| AS733US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |
| AS399154US | SECURITYSERVICES - Vercara, LLC | — | 256 | 1 |
| AS620US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS197272US | PHILIPHOGAN Philip Hogan | — | 1 | 1 |
| AS402724US | ZYNTY - Zynty | — | — | 0 |
| AS2644US | SMARTS-AS - System Management ARTS, Inc. | — | — | 0 |
| AS1976US | DNIC-AS-01976 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1915US | SEQUOIA-AS - National Science Foundation | — | — | 0 |
| AS402685US | NEBIUS-NA-SOUTH - Nebius | — | — | 0 |