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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 | 21,160 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS32942US | SCMASN - Sandler Capital Management | 256 | — | 1 |
| AS19407US | AMERICAN-TIRE-DISTRIBUTORS-INC-2 - AMERICAN TIRE DISTRIBUTORS, INC. | 256 | — | 1 |
| AS399577US | SUREFIRE - SureFire Internet, LLC | 256 | 256 | 2 |
| AS396034US | FJMG-AS - Fletcher Jones Management Group LLC | 256 | — | 1 |
| AS23438US | EZLINKS - EZLinks Golf, Inc. | 256 | — | 1 |
| AS397862US | CCFCU - Catalyst Corporate Federal Credit Union | 256 | — | 1 |
| AS11303US | DATARETURN - Verizon Business | 256 | — | 1 |
| AS399708US | NCWC-ARIN-ASN - North Carolina Wesleyan College | 256 | — | 1 |
| AS29947US | KIRKLAND-ELLIS-OC - Kirkland & Ellis LLP | 256 | — | 1 |
| AS393548US | ABRIA-AS-01 - AbriaCloud Technologies | 256 | — | 1 |
| AS398398US | DIGITALREALTY-IT-04 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS26987US | COAHOMACC - Coahoma Community College | 256 | — | 1 |
| AS394795US | COMM-SOLUTIONS - Communication Solutions, LLC | 256 | — | 1 |
| AS47042US | DIVERSEPOWER - Diverse Power Incorporated | 256 | — | 1 |
| AS402393US | ROCKYNET - RockyNet | 256 | 256 | 2 |
| AS23111US | GSC-ATLANTAVPC - Gannett Supply Corp. - Atlanta, GA (VPC) | 256 | — | 1 |
| AS400512US | OPELIKA-01 - City of Opelika | 256 | — | 1 |
| AS399818US | LAER-AS-DEN1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS36157US | ACER AMERICA CORPORATION - Acer America Corporation | 256 | — | 1 |
| AS33439US | NEW-DC-IN-EQUINIX-NY4 - Rackspace Hosting | 256 | — | 1 |
| AS396885US | HEART-ASN - Heart Technologies, Inc. | 256 | — | 1 |
| AS22447US | ZING-ISP-01 - Zing Broadband | 256 | — | 1 |
| AS394441US | MIRANTIS-US - Mirantis | 256 | — | 1 |
| AS393244US | AS-OVERLAKE - Overlake Hospital Medical Center | 256 | — | 1 |
| AS396403US | AVMED - Avmed | 256 | — | 1 |
| AS11163US | PLINK-OSIDE - Promptlink Communications Inc. | 256 | 1 | 2 |
| AS397436US | GRMC-ASN-PRIMARY - GUADALUPE REGIONAL MEDICAL CENTER | 256 | — | 1 |
| AS22962US | KENNEDY-NW-DC-US - The Kennedy Center | 256 | — | 1 |
| AS15340US | CVI-BORDER-1 - Community Vision, Inc. | 256 | — | 1 |
| AS398987US | NS-GLOBAL - PhirePhly Design | 256 | 1 | 2 |
| AS396117US | OCFA-IRV - Orange County Fire Authority | 256 | — | 1 |
| AS63301US | GSR-ARIN-01 - MEI-GSR Holdings, LLC | 256 | — | 1 |
| AS402006US | CHRYSANTHEMUM - CHRYSANTHEMUM LOTUS LIMITED | 256 | — | 1 |
| AS397341US | XL-103-397341 - XGRID LTD, LLC | 256 | — | 1 |
| AS13619US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS401473US | MKSYS - Marcus Systems, LLC | 256 | 256 | 2 |
| AS40129US | FREEDOMHEALTH - Sentry Data Systems, Inc. | 256 | — | 1 |
| AS20190US | AS20190 - 1-800-Flowers.com, Inc. | 256 | — | 1 |
| AS397737US | RLASD-ISP - Red Lion Area School District | 256 | — | 1 |
| AS36726US | ARROW-INTERNATIONAL - Arrow International Inc. | 256 | 1 | 2 |
| AS46194US | SPECTRUM-EVERSTREAM-CITYSC - St Louis CITY SC | 256 | — | 1 |
| AS31971US | UHC-SV - UMPQUA BANK | 256 | — | 1 |
| AS62789US | PDQATS-AS - PDQ Enterprises LLC | 256 | — | 1 |
| AS396844US | WRRE-1 - William Raveis Real Estate, Incorporated. | 256 | — | 1 |
| AS400378US | BEAUMONT-CITY01 - City of Beaumont, TX | 256 | — | 1 |
| AS393893US | ACS-ASN-01 - Alliance Cloud Services LLC | 256 | — | 1 |