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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| JMA-1 - John Mayes and Associates |
| 256 |
| — |
| 1 |
| AS54693US | AS24950 - AlphaSimplex Group, LLC | 256 | — | 1 |
| AS27031US | SCNM-TEMPE-1 - Southwest College of Naturopathic Medicine & Health Sciences Inc. | 256 | — | 1 |
| AS46714US | IPC-ATL-56-TELX - IP Communications LLC | 256 | — | 1 |
| AS402116US | AUTOSYS-NETWORK-01 - Automated Systems | 256 | — | 1 |
| AS397001US | CSISD - College Station Independent School District | 256 | — | 1 |
| AS47068US | GLENSFALLSHOSPITAL - Glens Falls Hospital | 256 | — | 1 |
| AS396131US | FERRE226-ARIN - Town of Hempstead | 256 | — | 1 |
| AS40700US | WILINE - WiLine Networks Inc. | 256 | — | 1 |
| AS14035US | KATTEN-MUCHIN-ROSENMAN-LLP - KATTEN MUCHIN ROSENMAN LLP | 256 | — | 1 |
| AS393851US | CURTIS - Taylor Corporation | 256 | — | 1 |
| AS395164US | NORTHERNLIGHT - Northern Light Single Point LLC | 256 | — | 1 |
| AS670US | DNIC-AS-00670 - Headquarters, USAISC | 256 | — | 1 |
| AS397349US | MUTABLE - Mutable | 256 | — | 1 |
| AS395223US | DIRECTV-ENGINEERING-VPL - DIRECTV, LLC | 256 | — | 1 |
| AS54151US | ABOUNDCU - Abound Credit Union | 256 | — | 1 |
| AS30681US | JCU-ASN - John Carroll university | 256 | — | 1 |
| AS396051US | PABOE - Perth Amboy Board of Education | 256 | — | 1 |
| AS399701US | NWW-PHX-1 - NAVAERA WORLDWIDE, LLC | 256 | — | 1 |
| AS63354US | STLZOO - Saint Louis Zoo | 256 | — | 1 |
| AS18748US | DAL-B2BVPN - Delta Air Lines | 256 | — | 1 |
| AS29839US | AS-AFILIAS-MEL1 - Afilias, Inc. | 256 | — | 1 |
| AS40453US | GRESHAM-NET - City of Gresham | 256 | — | 1 |
| AS206916US | SOUTHWEST-NET Southwest Network Corporation | 256 | — | 1 |
| AS401312US | TUPELO - Gray Media, Inc. | 256 | — | 1 |
| AS4466US | EASYLINK2 - AT&T Enterprises, LLC | 256 | 1 | 2 |
| AS399802US | FIBERSMITH-CBLOCK-170-31-11 - The Fibersmith Company | 256 | — | 1 |
| AS18957US | TAXRESOURCES-1 - TaxAudit.com | 256 | — | 1 |
| AS2909US | CITI2 - Citigroup Inc. | 256 | — | 1 |
| AS394253US | 1ST-TECH - XPRESSBET INC. | 256 | — | 1 |
| AS16956US | CATTARAUGUS-COUNTY - Cattaraugus County | 256 | — | 1 |
| AS26552US | PROMCAP - IntraFi LLC | 256 | — | 1 |
| AS26882US | RIPPLE-BROADBAND - Ripple Broadband, LLC | 256 | 65.5K | 2 |
| AS397703US | APOG-GRAMBLING - Apogee Telecom Inc. | 256 | — | 1 |
| AS36338US | BUCKS - Milwaukee Bucks, LLC | 256 | — | 1 |
| AS54717US | CLAREMONT-COMPUTER-NETWORK - Claremont Computer Network LLC | 256 | — | 1 |
| AS398668US | SKYDANCE - Skydance Productions LLC | 256 | 16 | 2 |
| AS18668US | DESCHUTES-COUNTY-911 - Deschutes 911 | 256 | — | 1 |
| AS394119US | EXPERIMENTAL-COMPUTING-FACILITY - eXperimental Computing Facility Foundation | 256 | 4.1K | 3 |
| AS395146US | OTVM-AS-01 - Optiv | 256 | — | 1 |
| AS13931US | AS-MH001 - MASONIC CHARITY FOUNDATION OF NEW JERSEY | 256 | — | 1 |
| AS27296US | WU-PRIMARY - Wilmington University, Inc. | 256 | — | 1 |
| AS393782US | EJ - EJ Group Incorporated | 256 | — | 1 |
| AS400017US | AS-CORP-RM-817 - Ruoff Mortgage | 256 | — | 1 |
| AS21809US | LNRP - LNR Property Corp | 256 | — | 1 |
| AS397489US | MATTHEWS-209 - Matthews Book Company | 256 | — | 1 |
| AS397837US | GEICO-CNAB - GEICO | 256 | — | 1 |