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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. | 217.9M | 23,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| 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.
32,143 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,819 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,993 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,303 |
| 2.8M |
| — |
| 19 |
| AS668US | DNIC-AS-00668 - United States Department of Defense (DoD) | 2.6M | 65.5K | 193 |
| AS2152US | CENIC-2152 - CENIC | 2.5M | 65.6K | 753 |
| AS237US | MERIT-AS-14 - Merit Network Inc. | 2.4M | 131.6K | 92 |
| AS7843US | TWC-7843-BB - Charter Communications Inc | 2.3M | 394.3K | 166 |
| AS5972US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 2.3M | — | 1,464 |
| AS270US | AS270 - National Aeronautics and Space Administration | 2.3M | — | 187 |
| AS367US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 2.2M | 22 | 1,054 |
| AS7155US | VIASAT-SP-BACKBONE - ViaSat,Inc. | 2.2M | 17.4M | 4,347 |
| AS81US | NCREN - MCNC | 2.1M | 1.1M | 138 |
| AS51964US | ORANGE-BUSINESS-SERVICES-IPSN-ASN ORANGE BUSINESS SERVICES U.S. Inc. | 2M | 1.2M | 344 |
| AS35916US | MULTA-ASN1 - MULTACOM CORPORATION | 1.9M | 1.2M | 74 |
| AS7792US | 3M-HDQ-AS - 3M Company | 1.9M | — | 28 |
| AS3US | MIT-GATEWAYS - Massachusetts Institute of Technology | 1.9M | 524.3K | 97 |
| AS4181US | TDS-AS - TDS TELECOM | 1.8M | 1.2M | 87 |
| AS6461US | ZAYO-6461 - Zayo Bandwidth | 1.8M | 266.2K | 223 |
| AS22284US | AS22284-DOI-OPS - U.S. Department of the Interior | 1.8M | 65.5K | 212 |
| AS11776US | ATLANTICBB-JOHNSTOWN - Breezeline | 1.7M | 345.1K | 1,938 |
| AS6325US | ILLINOIS-CENTURY - Illinois Century Network | 1.7M | 118.8K | 65 |
| AS14654US | WAYPORT - AT&T Enterprises, LLC | 1.7M | 65.5K | 217 |
| AS7385US | ABUL-14-7385 - Allstream Business US, LLC | 1.7M | 524.3K | 76 |
| AS27064US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 1.7M | 33 | 975 |
| AS3371US | MCI-ASN - Verizon Business | 1.6M | 131.1K | 31 |
| AS30036US | MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp | 1.6M | 759.1K | 3,816 |
| AS109US | CISCOSYSTEMS - CISCO SYSTEMS, INC. | 1.6M | 83.2K | 137 |
| AS6181US | FUSE-NET - Cincinnati Bell Telephone Company LLC | 1.6M | 1.1M | 118 |
| AS10695US | WAL-MART - Wal-Mart Stores, Inc. | 1.5M | — | 54 |
| AS3479US | PEACHNET-AS3479 - Board of Regents of the University System of Georgia | 1.5M | — | 23 |
| AS13335US | CLOUDFLARENET - Cloudflare, Inc. | 1.5M | 1.3M | 5,295 |
| AS20473US | AS-VULTR - The Constant Company, LLC | 1.5M | 7.7M | 1,990 |
| AS22561US | CENTURYLINK-LEGACY-LIGHTCORE - CenturyLink Communications, LLC | 1.4M | — | 334 |
| AS210US | WEST-NET-WEST - Utah Education Network | 1.4M | 65.5K | 29 |
| AS2686US | ATGS-MMD-AS - AT&T Enterprises, LLC | 1.4M | 65.5K | 170 |
| AS7459US | GRANDECOM-AS1 - Grande Communications Networks, LLC | 1.4M | 65.5K | 1,709 |
| AS8987US | GOVCLOUD - Amazon | 1.4M | 29.5K | 245 |
| AS12083US | WOW-INTERNET - WideOpenWest Finance LLC | 1.3M | 1M | 762 |
| AS46887US | CROWNCASTLE-AS46887 - Crown Castle Fiber LLC | 1.3M | 294.6K | 1,033 |
| AS11492US | CABLEONE - CABLE ONE, INC. | 1.3M | 458.9M | 4,684 |
| AS72US | SCHLUMBERGER-AS - Schlumberger Limited | 1.3M | — | 139 |
| AS26496US | AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC | 1.3M | 131.4K | 210 |
| AS5006US | VOYANT - Inteliquent, inc. | 1.2M | — | 77 |
| AS4010US | DNIC-AS-04010 - Headquarters, USAISC | 1.2M | — | 39 |
| AS17378US | AS17378 - TierPoint, LLC | 1.1M | 958.6K | 442 |
| AS8070US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 1.1M | 17.9K | 44 |
| AS7726US | FITC-AS - FedEx Internet Technologies Corporation | 1.1M | 201K | 117 |
| AS36352US | AS-COLOCROSSING - HostPapa | 1.1M | 1.2M | 3,245 |
| AS46690US | SNET-FCC - Southern New England Telephone Company and SNET America, Inc. | 1M | 1.1M | 4 |