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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 | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| — |
| — |
| 0 |
| AS4072US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4090US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4097US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4110US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4154US | USDA-1 - USDA | — | — | 0 |
| AS4168US | GULFSTAR - Gulfstar Charters, Inc. | — | — | 0 |
| AS4194US | SDINTERNET - Computer Dimensions, Inc. | — | — | 0 |
| AS4236US | CITIZENS-AS - Citizens Bank | — | — | 0 |
| AS4279US | INTERSOURCE - INTERSOURCE | — | — | 0 |
| AS4286US | MCI-WORLD - Verizon Business | — | — | 0 |
| AS4328US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4331US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4339US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4359US | DIGIPRESS-AS - Graphics Express | — | — | 0 |
| AS4365US | DIGITAL-CAFE-ASN - Digital Cafe | — | — | 0 |
| AS4471US | GRANDRAPIDS-INTERNET-EXCHANGE - 123.Net, Inc. | — | — | 0 |
| AS4472US | IONET - Internet Oklahoma | — | — | 0 |
| AS4477US | BBDATA - B&B Data Link | — | — | 0 |
| AS4496US | UUCOM-AS - UUcom, Inc. | — | — | 0 |
| AS4519US | MAAS - Maas Communications | — | — | 0 |
| AS4533US | GLOBESAT - Globesat Corp | — | — | 0 |
| AS4885US | KAWAII-BACKBONE - Kawaii | — | — | 0 |
| AS4943US | LOGIX FIBER NETWORKS - Logix | — | — | 0 |
| AS4953US | BCPL - Baltimore County Public Library | — | — | 0 |
| AS5001US | SONIC - Sonicnet | — | — | 0 |
| AS5043US | PERRAUT - Perraut Corporation | — | — | 0 |
| AS5053US | HTP - HTP Net, Inc | — | — | 0 |
| AS5066US | TERAS-4-5066 - Teraswitch, Inc. | — | — | 0 |
| AS5082US | CLOVERLEAF - Stanton Network Services | — | — | 0 |
| AS5099US | NWUC - Northwestern University | — | — | 0 |
| AS5125US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5144US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5166US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5175US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5184US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5186US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5206US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5209US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5210US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5214US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5228US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5282US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5286US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5302US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5304US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5312US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |