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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. | 211.1M | 21,110 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,246 |
| 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 | 1,954 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,419 |
| — |
| — |
| 0 |
| AS1682US | AOL-1682-AS - Yahoo Holdings Inc. | — | — | 0 |
| AS1685US | ANS-JAPAN - Verizon Business | — | — | 0 |
| AS1787US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | — | — | 0 |
| AS1793US | COGENT-1793 - Cogent Communications, LLC | — | — | 0 |
| AS1919US | UMASSNET-AS1919 - UMASSNET | — | — | 0 |
| AS1920US | RADIANZ-AS-1920 - BT Americas, Inc | — | — | 0 |
| AS2137US | DNIC-AS-02137 - United States Department of Defense (DoD) | — | — | 0 |
| AS2157US | HPINC - HP Inc. | — | — | 0 |
| AS2536US | TCADA - Texas Commission on Alcohol & Drug Abuse | — | — | 0 |
| AS2714US | GSA-GOV - General Services Administration | — | — | 0 |
| AS2720US | PARKE-38 - Parked.com, LTD | — | — | 0 |
| AS2751US | ATT-PARADYNE - AT&T Paradyne | — | — | 0 |
| AS2910US | CITI3 - Citigroup Inc. | — | — | 0 |
| AS2945US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2947US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2989US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3033US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3045US | RICE-AS3045 - Rice University | — | — | 0 |
| AS3050US | RICE-AS3050 - Rice University | — | — | 0 |
| AS3057US | HPINC - HP Inc. | — | — | 0 |
| AS3065US | NYCENET-AS - NYCENET/Information Resources Unit | — | — | 0 |
| AS3114US | DOJ-CRT-ASN - Department of Justice | — | — | 0 |
| AS3127US | CAPRICA-AS - Caprica Telecomputing Resources | — | — | 0 |
| AS3392US | GMTI-ORF - GANNETT MEDIA TECHNOLOGIES INTERNATIONAL | — | — | 0 |
| AS3398US | SAND-NET - Sun Users Group Metro San Diego Network Coop | — | — | 0 |
| AS3467US | DNIC-AS-03467 - United States Department of Defense (DoD) | — | — | 0 |
| AS3572US | TEXAS-TYC - Texas Youth Commission | — | — | 0 |
| AS3611US | PIC - NETCOM Interactive | — | — | 0 |
| AS3621US | MCIASN-BLK - Verizon Business | — | — | 0 |
| AS3645US | COGENT-3645 - Cogent Communications, LLC | — | — | 0 |
| AS3722US | NETACTUATE - NetActuate, Inc | — | — | 0 |
| AS3735US | CONNECTION - Connection Technologies | — | — | 0 |
| AS3746US | IPAC-WORLD - Internet Public Access Corporation | — | — | 0 |
| AS3771US | SPERRY-AS - Sperry | — | — | 0 |
| AS3793US | TIC - The Internet Connection | — | — | 0 |
| AS3799US | IDS - InteleCom Data Systems, Inc, | — | — | 0 |
| AS3815US | AQUILA - Aquila BBS Inc. | — | — | 0 |
| AS3841US | BIHS-NET - Brazos Information Highway Services | — | — | 0 |
| AS3865US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3872US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3886US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3889US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3891US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3924US | TX-OAG - Texas Attorney General | — | — | 0 |
| AS3946US | NTTA-3946 - NTT America, Inc. | — | — | 0 |
| AS3947US | NTTA-3946 - NTT America, Inc. | — | — | 0 |