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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| AS-AMRI - Curia Global, Inc. |
| 256 |
| — |
| 1 |
| AS36127US | MCPS - Miller Canfield | 256 | 1 | 2 |
| AS399192US | BECI-01 - Beauregard Electric Cooperative, Inc | 256 | — | 1 |
| AS402166US | MANNHEIM-SD83 - Mannheim School District 83 | 256 | — | 1 |
| AS397203US | VRSN-AC28 - VeriSign Global Registry Services | 256 | 1 | 2 |
| AS401410US | BROADPATH-DC-ONE - BROADPATH, LLC | 256 | — | 1 |
| AS399213US | VAGARO - Vagaro | 256 | — | 1 |
| AS63137US | DOMDIAGASN211 - Dominion Diagnostics, LLC | 256 | — | 1 |
| AS21931US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS401264US | UACCM-AS - University of Arkansas Community College at Morrilton | 256 | 256 | 2 |
| AS398183US | CAROLINA-AUTO-AUCTION - CAROLINA AUTO AUCTION, INC. | 256 | — | 1 |
| AS36484US | ALIGN-JS-CAPITAL - JS CAPITAL MANAGEMENT LLC | 256 | — | 1 |
| AS398948US | CCRWEST-AS - Institute for Defense Analyses | 256 | — | 1 |
| AS402101US | ALLOY-CLOUD - ALLOY, Inc. | 256 | — | 1 |
| AS15235US | OMC-COGENT - The Old Mountain Company Inc. | 256 | 1 | 2 |
| AS62580US | PILOT-CORP - Pilot Fiber, Inc. | 256 | — | 1 |
| AS26376US | IBC4-AS - International Bonded Couriers, Inc. | 256 | — | 1 |
| AS401666US | WORLD-GOLF-TOUR - World Golf Tour | 256 | — | 1 |
| AS33435US | CITYOFSPRINGFIELDMA - City of Springfield, Massachusetts | 256 | — | 1 |
| AS26296US | CLEARLINK - ClearLink | 256 | — | 1 |
| AS33557US | DT-ATL-QTS-ASN - Dealership Technologies, LLC | 256 | — | 1 |
| AS54961US | MITCHELL-INTERNATIONAL - Mitchell International | 256 | — | 1 |
| AS35957US | IT-IS-WRITTEN - It Is Written, Inc. | 256 | — | 1 |
| AS62934US | FFBF-PROD01 - First Federal Bank of Florida | 256 | — | 1 |
| AS401437US | NEXTGUARD-HOSTING - NextGuard Solutions, Inc. | 256 | — | 1 |
| AS6955US | DANDH - D&H Distributing Company | 256 | — | 1 |
| AS23527US | CHRISTCATHEDRALCA - Christ Catholic Cathedral Corporation | 256 | — | 1 |
| AS29937US | BR-01 - Boone REMC | 256 | — | 1 |
| AS17355US | WSD - Wayzata School District, ISD #284 | 256 | — | 1 |
| AS62797US | CASTO-250CIVICCENTER - CASTO Management Services inc | 256 | — | 1 |
| AS394961US | SAINT-ANSELM-COLLEGE - Saint Anselm College | 256 | — | 1 |
| AS402708US | CPASNET3 - Centerview | 256 | — | 1 |
| AS25918US | LMHS - Lima Memorial Hospital | 256 | — | 1 |
| AS393800US | AWMF - The Andrew W. Mellon Foundation | 256 | — | 1 |
| AS393830US | MAINE-MUNICIPAL-ASSOCIATION - Maine Municipal Association | 256 | — | 1 |
| AS19951US | MEASUREMENT-INCORPORATED-DURHAM-DATACENTER-AS - Measurement Incorporated | 256 | — | 1 |
| AS27189US | MARTEN-TRANSPORT-LTD - Marten Transport, Ltd. | 256 | — | 1 |
| AS401508US | INNGEST-01 - Inngest Inc. | 256 | 2 | 3 |
| AS40721US | PABMC - Pennsylvania House of Representatives BMC | 256 | — | 1 |
| AS53505US | DRCFA - Huntington Place | 256 | — | 1 |
| AS399990US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | — | 1 |
| AS33245US | JABIL-AS-SINU-PH - Jabil | 256 | — | 1 |
| AS402762US | SHIFT4 - Shift4 | 256 | — | 1 |
| AS199770US | IQ-NET IQNET COMMUNICATIONS LLC | 256 | — | 1 |
| AS18748US | DAL-B2BVPN - Delta Air Lines | 256 | — | 1 |
| AS394119US | EXPERIMENTAL-COMPUTING-FACILITY - eXperimental Computing Facility Foundation | 256 | 4.1K | 3 |
| AS32920US | ITHAKA-AS32920 - ITHAKA Harbors, Inc. | 256 | — | 1 |