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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
| 68.2M |
| 345 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,107 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,573 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| 209.9K |
| 142.6K |
| 139 |
| AS7896US | NU-AS - The Board of Regents of the University of Nebraska | 209.2K | 1M | 8 |
| AS21517US | KSU-KENNESAW-01 - Kennesaw State University | 208.9K | — | 14 |
| AS14US | COLUMBIA-GW - Columbia University | 208.9K | 65.5K | 12 |
| AS11188US | LACOUNTY-ISD - LOS ANGELES COUNTY - INTERNAL SERVICESDIVISION | 208.1K | — | 49 |
| AS25US | UCB - University of California at Berkeley | 206.1K | 65.5K | 15 |
| AS1999US | HOUSE-AS-1 - U.S. House of Representatives | 205.8K | 4 | 9 |
| AS340US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 205.6K | 256 | 8 |
| AS14381US | CATERPILLAR-INC - Caterpillar, Inc. | 205.1K | 131.1K | 43 |
| AS25935US | WNYRIC-NET - Erie 1 BOCES | 205.1K | — | 21 |
| AS1742US | HARVARD-UNIV - Harvard University | 204.6K | 69.6K | 18 |
| AS36850US | UNC-CH - University of North Carolina at Chapel Hill | 203.5K | 65.5K | 11 |
| AS13760US | UNITI-FIBER - Uniti Fiber Holdings Inc. | 203.5K | 200.7K | 172 |
| AS40676US | AS40676 - Psychz Networks | 202.8K | 500.9K | 595 |
| AS398465US | RACKDOG-LLC - Rackdog, LLC | 202.5K | 1.3M | 188 |
| AS3495US | SENATE-AS - US Senate | 201K | 2 | 20 |
| AS36647US | YAHOO-GQ1 - Yahoo Holdings Inc. | 201K | 17 | 75 |
| AS5653US | UCSF - University of California San Francisco | 200.7K | — | 19 |
| AS13767US | DATABANK-DFW - DataBank Holdings, Ltd. | 200.4K | 138.3K | 260 |
| AS290US | SHOWNET-AS - Interop Show Network | 200.4K | 65.5K | 9 |
| AS54804US | CSMIII-BUNKIELA - CableSouth Media III LLC | 199.7K | 65.5K | 74 |
| AS14551US | UUNET-SA - Verizon Business | 199.4K | — | 9 |
| AS4185US | ATTIS-ASN4185 - AT&T Enterprises, LLC | 199.4K | 21 | 20 |
| AS64226US | MDURESOURCES - MDU Resources Group, Inc. | 199.2K | — | 17 |
| AS13541US | SIEMENS-DISW-WIV-B-ORW - Siemens Industry Software Inc. | 198.7K | 256 | 8 |
| AS46US | RUTGERS - Rutgers, The State University | 198.7K | 4 | 10 |
| AS20343US | PEPPERDINE - Pepperdine University | 198.7K | — | 15 |
| AS36291US | SANOFI - Sanofi | 198.4K | — | 9 |
| AS19855US | MASERGY - Masergy Communications, Inc. | 198.4K | 196.6K | 103 |
| AS159US | OSUNET-AS - Ohio State University | 198.4K | 1 | 8 |
| AS11719US | EATON-CORPORATION - Eaton Corporation | 198.1K | — | 9 |
| AS395959US | XEROX-ELL - XEROX CORPORATION | 197.9K | — | 7 |
| AS2553US | FSU-AS - Florida State University | 197.9K | 1 | 8 |
| AS11442US | NCSU - North Carolina State University | 197.6K | 65.5K | 5 |
| AS26US | CORNELL - Cornell University | 197.4K | 16 | 7 |
| AS11279US | GEORGE-MASON-UNIV - George Mason University | 197.1K | 256 | 17 |
| AS40831US | PHS - Mass General Brigham Incorporated | 197.1K | — | 5 |
| AS331US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 197.1K | — | 5 |
| AS1657US | LOUISVILLE - University of Louisville | 196.9K | 1 | 15 |
| AS17324US | ALNET - Yeshiva University | 196.6K | 12.3K | 14 |
| AS12025US | IMDC-AS12025 - Iron Mountain Data Center | 194K | 217.4K | 752 |
| AS5065US | BUNNY-COMMUNICATIONS-GLOBAL - Bunny Communications | 193.8K | 1 | 683 |
| AS3593US | FRONTIER-EPIX - Frontier Communications of America, Inc. | 193K | — | 55 |
| AS196US | BOEING196 - The Boeing Company | 191.5K | — | 16 |
| AS8030US | WORLDNET5-10 - AT&T WorldNet | 191.2K | — | 40 |
| AS18186US | NEBULA-GLOBAL - Nebula Global LLC | 190.2K | 14 | 586 |
| AS8015US | US-SIGNAL-MN01 - US Signal Company, L.L.C. | 189.2K | 65.8K | 11 |