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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| — |
| — |
| 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 |
| AS4018US | DIA-AS - Defence Intelligence Agency | — | — | 0 |
| AS4021US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS4061US | GTTW-NET - Jax Gateway to the World | — | — | 0 |
| AS4063US | ELCSCI-ASN - Electro Scientific Industries | — | — | 0 |
| AS4069US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4091US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4096US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4113US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4119US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4131US | USIS-AS - USIS | — | — | 0 |
| AS4132US | COGENT-4132 - Cogent Communications, LLC | — | — | 0 |
| AS4167US | AP-2440-4167 - Anthropic, PBC | — | — | 0 |
| AS4171US | EUROGRAFIX - Eurografix, Inc. | — | — | 0 |
| AS4180US | CHAPUB - Chattanooga Publishing Company | — | — | 0 |
| AS4200US | COGENT-4200 - Cogent Communications, LLC | — | — | 0 |
| AS4257US | CYBERCASH-AS - CyberCash, Inc. | — | — | 0 |
| AS4263US | CERNET-ASN-BLOCK - California Education and Research Federation Network | — | — | 0 |
| AS4295US | CENTURYLINK-QC-MOE-DAVENPORT - CenturyLink Communications, LLC | — | — | 0 |
| AS4319US | CORTLAND - Cortland Electronics Corp. | — | — | 0 |
| AS4371US | FEMA-GOV - State of California Office of Emergency Services | — | — | 0 |
| AS4383US | NAIC - Air Force Systems Networking | — | — | 0 |
| AS4391US | BRI-NET - B R I | — | — | 0 |