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Cumulative IPv4, IPv6, and ASN allocations to United States over time.
Share of announced address space covered by valid Route Origin Authorizations.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 2.8M |
| — |
| 19 |
| AS11404US | AS-WAVE-1 - Wave Broadband | 2.7M | 10.7M | 1,753 |
| AS668US | DNIC-AS-00668 - United States Department of Defense (DoD) | 2.5M | 65.5K | 192 |
| AS2152US | CENIC-2152 - CENIC | 2.5M | 65.6K | 723 |
| AS237US | MERIT-AS-14 - Merit Network Inc. | 2.4M | 131.6K | 92 |
| AS5972US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 2.3M | — | 1,436 |
| AS270US | AS270 - National Aeronautics and Space Administration | 2.3M | — | 187 |
| AS35916US | MULTA-ASN1 - MULTACOM CORPORATION | 2.2M | 1.2M | 108 |
| AS7843US | TWC-7843-BB - Charter Communications Inc | 2.2M | 394.3K | 181 |
| AS81US | NCREN - MCNC | 2.2M | 1.1M | 146 |
| AS7155US | VIASAT-SP-BACKBONE - ViaSat,Inc. | 2.1M | 17.4M | 3,880 |
| AS51964US | ORANGE-BUSINESS-SERVICES-IPSN-ASN ORANGE BUSINESS SERVICES U.S. Inc. | 2.1M | 1.2M | 349 |
| AS4181US | TDS-AS - TDS TELECOM | 2.1M | 1.2M | 588 |
| AS7792US | 3M-HDQ-AS - 3M Company | 2M | — | 31 |
| AS3US | MIT-GATEWAYS - Massachusetts Institute of Technology | 1.9M | 524.4K | 100 |
| AS27064US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 1.8M | 34 | 992 |
| AS6461US | ZAYO-6461 - Zayo Bandwidth | 1.8M | 790.5K | 225 |
| AS11776US | ATLANTICBB-JOHNSTOWN - Breezeline | 1.7M | 345.1K | 1,921 |
| AS6325US | ILLINOIS-CENTURY - Illinois Century Network | 1.7M | 118.8K | 80 |
| AS14654US | WAYPORT - AT&T Enterprises, LLC | 1.7M | 65.5K | 217 |
| AS22284US | AS22284-DOI-OPS - U.S. Department of the Interior | 1.7M | 65.5K | 207 |
| AS7385US | ABUL-14-7385 - Allstream Business US, LLC | 1.7M | 524.3K | 76 |
| AS3371US | MCI-ASN - Verizon Business | 1.6M | 131.1K | 32 |
| AS30036US | MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp | 1.6M | 737K | 3,779 |
| AS109US | CISCOSYSTEMS - CISCO SYSTEMS, INC. | 1.6M | 82.9K | 136 |
| AS6181US | FUSE-NET - Cincinnati Bell Telephone Company LLC | 1.6M | 1.1M | 118 |
| AS10695US | WAL-MART - Wal-Mart Stores, Inc. | 1.5M | — | 55 |
| AS3479US | PEACHNET-AS3479 - Board of Regents of the University System of Georgia | 1.5M | — | 23 |
| AS22561US | CENTURYLINK-LEGACY-LIGHTCORE - CenturyLink Communications, LLC | 1.5M | — | 336 |
| AS7459US | GRANDECOM-AS1 - Grande Communications Networks, LLC | 1.5M | 65.5K | 1,688 |
| AS13335US | CLOUDFLARENET - Cloudflare, Inc. | 1.4M | 1.2M | 5,219 |
| AS20473US | AS-VULTR - The Constant Company, LLC | 1.4M | 7.1M | 2,012 |
| AS210US | WEST-NET-WEST - Utah Education Network | 1.4M | 65.5K | 30 |
| AS2686US | ATGS-MMD-AS - AT&T Enterprises, LLC | 1.4M | 65.5K | 173 |
| AS46887US | CROWNCASTLE-AS46887 - Crown Castle Fiber LLC | 1.3M | 294.1K | 1,012 |
| AS11492US | CABLEONE - CABLE ONE, INC. | 1.3M | 285.2M | 4,604 |
| AS72US | SCHLUMBERGER-AS - Schlumberger Limited | 1.3M | — | 141 |
| AS26496US | AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC | 1.3M | 131.4K | 207 |
| AS12083US | WOW-INTERNET - WideOpenWest Finance LLC | 1.3M | 1M | 702 |
| AS5006US | VOYANT - Inteliquent, inc. | 1.2M | — | 77 |
| AS4010US | DNIC-AS-04010 - Headquarters, USAISC | 1.2M | — | 39 |
| AS17378US | AS17378 - TierPoint, LLC | 1.1M | 958.6K | 449 |
| AS8070US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 1.1M | 17.9K | 44 |
| AS637US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 1.1M | — | 542 |
| AS7726US | FITC-AS - FedEx Internet Technologies Corporation | 1.1M | 201K | 117 |
| AS46690US | SNET-FCC - Southern New England Telephone Company and SNET America, Inc. | 1M | 1.1M | 4 |
| AS1226US | CTA-42-AS1226 - California Department of Technology | 1M | — | 32 |