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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) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 396 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,707 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,418 |
| 256 |
| 256 |
| 2 |
| AS396500US | MINAKILABS-AS01 - MinakiLabs | 256 | — | 1 |
| AS384US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS10545US | LCOL - University of Lynchburg | 256 | — | 1 |
| AS40693US | AS-CVMC-CENTRAL-VERMONT-MEDICAL-CENTER - Central Vermont Medical Center | 256 | — | 1 |
| AS397030US | HILTON-H - Hilton Worldwide Holdings Inc | 256 | — | 1 |
| AS13954US | STAPLES - Staples, Inc | 256 | — | 1 |
| AS6946US | AMS-PAGING-VOIP - American Messaging Services L.L.C. | 256 | — | 1 |
| AS12254US | INSTRUCTURE-MAIN - Instructure, Inc | 256 | — | 1 |
| AS396452US | LOUDOUN-WATER - Loudoun Water | 256 | — | 1 |
| AS30410US | FCSO1-ASN - First Coast Service Options, Inc. | 256 | — | 1 |
| AS394517US | KNOLL-INC - MillerKnoll, Inc. | 256 | — | 1 |
| AS397039US | WORLDSTRIDES - WorldStrides | 256 | — | 1 |
| AS397488US | NEW-ALBANY-PLAIN-LOCAL-SCHOOLS-AS - New Albany-Plain Local School District | 256 | 4.6K | 4 |
| AS15059US | CENLAR-FSB-2020 - Cenlar FSB | 256 | — | 1 |
| AS46127US | AS-DRSTECH - Leonardo DRS, Inc. | 256 | — | 1 |
| AS397744US | REANONYMOUS - ReAnonymous LLC | 256 | — | 1 |
| AS20242US | GCO-HQ - GENESCO INC | 256 | — | 1 |
| AS401930US | JFK NTO - New Terminal One | 256 | — | 1 |
| AS40541US | CCS-ASN - Central Credit Services Inc | 256 | — | 1 |
| AS46201US | COYUBA58 - County of Yuba | 256 | — | 1 |
| AS21868US | A10H - A10H LLC | 256 | 256 | 2 |
| AS399763US | FIVESTAR-TIERPOINT-01 - Issues Management, Inc. | 256 | — | 1 |
| AS393332US | MCALLENISD-TX - McAllen Independent School District | 256 | — | 1 |
| AS14785US | BCBSVT-DOT8-ASN - BCBSVT | 256 | — | 1 |
| AS13430US | THEWISP-NWIL - DC COMPUTERS | 256 | — | 1 |
| AS63484US | CREDIT-UNION-WEST - Credit Union West | 256 | — | 1 |
| AS36832US | NGL-AS - Network Gibbon LLC | 256 | 256 | 2 |
| AS394663US | ARTIFICIAL LABS AI USA - Artificial Labs Corp | 256 | — | 1 |
| AS62585US | MC-NET - Messiah University | 256 | — | 1 |
| AS32330US | CENTRAL-GARDEN-AND-PET - Central Garden & Pet Company | 256 | — | 1 |
| AS398039US | CENTRIS-ASN-01 - Centris Federal Credit Union | 256 | — | 1 |
| AS151975US | EAAPPL-AS-AP - Electronic Arts Inc. | 256 | — | 1 |
| AS400129US | GMI-AS - Graphic Magic, Inc. | 256 | 4.1K | 2 |
| AS398304US | THE-IT-GUY - The IT Guy | 256 | — | 1 |
| AS62779US | AMER-COLLEGE-OF-CARDIOLOGY-HOSTING1 - American College of Cardiology | 256 | — | 1 |
| AS17235US | COMTIME - Commercial Time Sharing, Inc. | 256 | — | 1 |
| AS402585US | DIGITAINO-LLC - Digitaino | 256 | 2 | 3 |
| AS22880US | PRIMED-HPMG - PRIMED MANAGEMENT CONSULTING INC | 256 | — | 1 |
| AS1652US | MIDFLORIDA-AS - MIDFLORIDA Federal Credit Union | 256 | — | 1 |
| AS35965US | EDNPC-ORG-1 - Electrical District No.3 of Pinal County | 256 | — | 1 |
| AS399132US | AS-GNS - Genesis Network Solutions, INC. | 256 | — | 1 |
| AS16827US | LAWTONIS - Lawton Information Services, LLC | 256 | — | 1 |
| AS25750US | AS25750 - Southwestern Vermont Health Care Corporation | 256 | — | 1 |
| AS398134US | BENEVIS-DC1-ASN - Benevis Corp | 256 | — | 1 |
| AS23538US | JOHNSON-COUNTY-ASN - Johnson County Iowa | 256 | — | 1 |
| AS396348US | CUMBERLAND-ELECTRIC-MEMBERSHIP-CORP - Cumberland Electric Membership Corp | 256 | — | 1 |