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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. | 218M | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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 |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| 65.5K |
| — |
| 1 |
| AS2532US | LOC - Library of Congress | 65.5K | — | 1 |
| AS18800US | SLCC - Salt Lake Community College | 65.5K | — | 1 |
| AS15337US | WRHARPER - Wm. Rainey Harper College | 65.5K | — | 1 |
| AS29917US | KSC - University System of New Hampshire | 65.5K | — | 1 |
| AS16889US | STEVENS-TECH - Stevens Institute of Technology | 65.5K | — | 1 |
| AS1348US | CA-DOTNET-AS - California Department of Transportation | 65.5K | — | 1 |
| AS47090US | SCLHS-47090 - Intermountain Health Care, Inc. | 65.5K | — | 1 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS14169US | VMI-ASN - Virginia Military Institute | 65.5K | — | 1 |
| AS13326US | TUFTS-UNIVERSITY - Tufts University | 65.5K | 65.5K | 2 |
| AS394003US | UMASSD - University of Massachusetts Dartmouth | 65.5K | — | 1 |
| AS40723US | UVA-WISE-AS - The University of Virginia's College at Wise | 65.5K | — | 1 |
| AS55282US | SUNYCANTON-AS - State University of New York College of Technology at Canton | 65.5K | — | 1 |
| AS14486US | OXY-AS - Occidental College | 65.5K | — | 1 |
| AS30641US | STATEOFDE - STATE OF DELAWARE | 65.5K | 4.1K | 3 |
| AS10631US | GSU10631 - Georgia State University | 65.5K | — | 1 |
| AS46905US | UMASS-LOWELL - University of Massachusetts - Lowell | 65.5K | — | 1 |
| AS27616US | AS-NEWSCHOOL - The New School | 65.5K | — | 1 |
| AS46662US | BSU-AS - Boise State University | 65.5K | — | 1 |
| AS36427US | VASSAR-ASN1 - Vassar College | 65.5K | — | 1 |
| AS6172US | MUSD-INTERNET - Mesa Public Schools | 65.5K | — | 3 |
| AS14706US | MBARI-MAIN - Monterey Bay Aquarium Research Institute | 65.5K | — | 1 |
| AS20239US | MNPOWER-ASN - ALLETE, Inc. | 65.5K | — | 1 |
| AS11214US | UNIVERSITY-OF-NORTH-FLORIDA - University of North Florida | 65.5K | 16 | 2 |
| AS23193US | CCAC - Community College of Allegheny County | 65.5K | — | 9 |
| AS11417US | NIU - Northern Illinois University | 65.5K | — | 1 |
| AS11649US | GUNET - Gonzaga University | 65.5K | — | 1 |
| AS19148US | LEASEWEB-USA-PHX - Leaseweb USA, Inc. | 65.3K | 5.3M | 57 |
| AS26548US | PUREVOLTAGE-INC - PureVoltage Hosting Inc. | 65.3K | 21K | 142 |
| AS398993US | PEG-TY - PEG TECH INC | 65K | — | 48 |
| AS36086US | TELX-LEGACY - Telx | 65K | 41.7K | 155 |
| AS14737US | CCCOES - Colorado Community College and Occupational Education System | 65K | — | 8 |
| AS12097US | MASSCOM - Massillon Cable Communications | 64.8K | 65.5K | 27 |
| AS7296US | AS-DYNASCALE-LAX - Dynascale Technologies, Inc. | 64.8K | 81.9K | 256 |
| AS22653US | GLOBALCOMPASS - Cyber Wurx LLC | 64.8K | 69.6K | 22 |
| AS14789US | CLOUDFLARENET - Cloudflare, Inc. | 64.5K | 248 | 500 |
| AS20257US | FTC-INET - Farmers Telephone Cooperative, Inc. | 64.3K | 65.5K | 30 |
| AS5663US | EDCNET - Department of Interior United States Geological Survey | 64K | — | 13 |
| AS27425US | ASN-IDK-27425 - IdeaTek Telcom, LLC | 64K | 1.2M | 116 |
| AS8175US | HIGHSPEEDWEB - High Speed Web/Genesis 2 Networks | 63.7K | — | 6 |
| AS33544US | WILINE - WiLine Networks Inc. | 63.7K | 68.2K | 70 |
| AS25829US | SMITHSONIAN - Smithsonian Institution | 63.7K | 1 | 7 |
| AS2165US | HPINC - HP Inc. | 63.7K | 4 | 17 |
| AS19151US | BBO-1 - BroadbandONE, LLC | 63.7K | 65.5K | 40 |
| AS13370US | NWF-LOCALTEL-ASN-1 - Ziply Fiber | 63.7K | 65.5K | 20 |
| AS26439US | CITY-OF-ABQ - City of Albuquerque | 63.5K | — | 12 |