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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 | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,245 |
| 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 | 398 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,708 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,952 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,420 |
| — |
| — |
| 0 |
| AS401955US | PSSCLABS001 - PSSC Labs | — | — | 0 |
| AS401980US | AS-OZKAY - Ozkay LLC | — | — | 0 |
| AS402016US | ASU-THREERIVERS-AS - Arkansas State University | — | — | 0 |
| AS402034US | WP1 - Winnr | — | — | 0 |
| AS402049US | PCCUA-STUTTGART-AS - Phillips Community College of the University of Arkansas | — | — | 0 |
| AS402093US | UPHOST - DigitalHost LLC | — | — | 0 |
| AS402112US | TABAR-1 - Tabarruk | — | — | 0 |
| AS402129US | AENTE-HEALTHTECH-AS - AENTE INC | — | — | 0 |
| AS402134US | WPP-ET-CAMPUS-MUMBAI - The Ogilvy Group, LLC | — | — | 0 |
| AS402202US | GEOFIBER - GeoFiber Broadband and Internet Services LLC | — | — | 0 |
| AS402234US | LARC-PUBLIC-1 - LOS ALISOS RANCH COMPANY, LP | — | — | 0 |
| AS402275US | AS-BITBOUCHER - BITBOUCHER LLC | — | — | 0 |
| AS402280US | BWRSD - Bristol Warren Regional School District | — | — | 0 |
| AS402325US | SOUTHERN-TIER-NETWORK-NY - Southern | — | — | 0 |
| AS402367US | POLARSEC-NET - PolarSec | — | — | 0 |
| AS402368US | HOSTGSM-NET - hostgsm.com | — | — | 0 |
| AS402370US | RAPIDFAIRING - Rapidfairing | — | — | 0 |
| AS402374US | DELCAMBRE-CO - Delcambre | — | — | 0 |
| AS402383US | KUMREZ - Kumrez | — | — | 0 |
| AS402451US | ZOOM-CORPNET-PEER-01 - Zoom | — | — | 0 |
| AS402457US | KCITL-US-AS - KENYU | — | — | 0 |
| AS402496US | REDDOT-BGP - Red | — | — | 0 |
| AS402507US | NETWORKOLOGY - Networkology | — | — | 0 |
| AS402513US | AIRWAVE-AS - Airwave | — | — | 0 |
| AS402575US | JMT-HVMD - Johnson, | — | — | 0 |
| AS402576US | PITL2-UA-AS - PRIMEUNITY | — | — | 0 |
| AS402589US | SYNIAC - Syniac | — | — | 0 |
| AS15US | NET-DYNAMICS-EXP - DYNAMICS | — | — | 0 |
| AS132US | WPAFB-CSD-NET-AS - Air Force Systems Networking | — | — | 0 |
| AS163US | IBM-RESEARCH-AS - IBM | — | — | 0 |
| AS179US | UMICH-AS-3 - University of Michigan | — | — | 0 |
| AS180US | UMICH-AS-4 - University of Michigan | — | — | 0 |
| AS183US | MERIT-AS-3 - Merit Network Inc. | — | — | 0 |
| AS204US | PSCNET-AS - Pittsburgh Supercomputing Center | — | — | 0 |
| AS253US | NTTA-253 - NTT America, Inc. | — | — | 0 |
| AS387US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS403US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS440US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS472US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS479US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS480US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS522US | AFSC-SSD-AS - Air Force Systems Networking | — | — | 0 |
| AS536US | DNIC-AS-00536 - Headquarters, USAISC | — | — | 0 |
| AS560US | LVLT-560 - Level 3 Parent, LLC | — | — | 0 |
| AS617US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS620US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |