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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| — |
| — |
| 0 |
| AS5771US | ALSK-5771 - Alaska Communications Systems Group, Inc. | — | — | 0 |
| AS5781US | CSI-GATEWAY-2 - Connectivity Solutions, Inc. | — | — | 0 |
| AS5811US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5812US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5841US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5849US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5854US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5862US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5904US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5926US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5928US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5934US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5943US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5965US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6015US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6048US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6078US | JERSEY - InterActive Network Services | — | — | 0 |
| AS6088US | BOX - The Black Box | — | — | 0 |
| AS6136US | NWRAINET - NW RAIN.net, Inc | — | — | 0 |
| AS6157US | SPRINTLINK-HOSTING - SPRINT, Business Serices Group | — | — | 0 |
| AS6161US | COMCAST-6161 - Comcast Cable Communications, LLC | — | — | 0 |
| AS6196US | INTERNET-SYSTEMS - Internet Systems, Inc. | — | — | 0 |
| AS6226US | CENTURYLINK-LEGACY-QWEST-PROJECT-LION2 - CenturyLink Communications, LLC | — | — | 0 |
| AS6297US | NETBLK-ORGANIC-2 - Organic, Inc | — | — | 0 |
| AS6382US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS6397US | LIBBY - Lincoln County Tech Group | — | — | 0 |
| AS6445US | SIEMENS-US - Siemens Corporation | — | — | 0 |
| AS6449US | SPRINT-ISP - Sprint Multimedia Internet Division | — | — | 0 |
| AS6451US | SFEFCU-AS - South Florida Educational Federal Credit Union | — | — | 0 |
| AS6478US | ATT-INTERNET3 - AT&T Enterprises, LLC | — | — | 0 |
| AS6511US | BKGV-ASN - StrataCom, Inc. | — | — | 0 |
| AS6546US | AGAIN-NET-1 - PEGLabs | — | — | 0 |
| AS6564US | CONSTANT - CONSTANT COMMUNICATIONS | — | — | 0 |
| AS6578US | AXXIS - AXXIS Corporation | — | — | 0 |
| AS6588US | IN-QUICK - Internet QuickLink Corporation | — | — | 0 |
| AS6636US | ARMIGERON - Armigeron Information Services, Inc. | — | — | 0 |
| AS6814US | GTT Communications Inc. | — | — | 0 |
| AS6917US | MULTEXSYS - Multex Systems, Inc. | — | — | 0 |
| AS6925US | DIGADV-AS - Digital Advantage Corporation | — | — | 0 |
| AS6929US | COSITE-ASN-1 - COSITE, INC. | — | — | 0 |
| AS6930US | GOLD-AS - FIRST VIRTUAL HOLDINGS INC. | — | — | 0 |
| AS6940US | COMSTREAM - Comstream | — | — | 0 |
| AS6941US | HEALTHEON - Healtheon Corp. | — | — | 0 |
| AS6959US | DTS-AFRICA - Diplomatic Telecommunications Services | — | — | 0 |
| AS7001US | METACLOUD-PUBLIC-1 - Metacloud LLC | — | — | 0 |
| AS7026US | IME-AS - Internet Maine | — | — | 0 |