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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| AMU-FL - Ave Maria University |
| 256 |
| — |
| 1 |
| AS36743US | AUSRA-SYSTEMS - Ausra LLC | 256 | 18 | 4 |
| AS32119US | WESLEYAN-SCHOOL - Wesleyan School, Inc. | 256 | 256 | 2 |
| AS396941US | DRI-RSC - DARDEN CORPORATION | 256 | — | 1 |
| AS400472US | COMPANION-CORP - Companion Corporation | 256 | — | 1 |
| AS63012US | EBRSO - East Baton Rouge Sheriff | 256 | — | 1 |
| AS401130US | SATURN-ASN-01 - SaturnDotDev | 256 | 256 | 2 |
| AS396849US | KPRC - GRAHAM MEDIA GROUP, HOUSTON, INC. | 256 | — | 1 |
| AS400621US | YUHSD-ISP - Yuma Union High School District #70 | 256 | — | 1 |
| AS36189US | NEILMEDAS - Neil Medical Group | 256 | — | 1 |
| AS36338US | BUCKS - Milwaukee Bucks, LLC | 256 | — | 1 |
| AS399454US | GLS-NSH1-01 - Global Linking Solutions | 256 | 1 | 2 |
| AS396081US | OTC-ASN-DC2 - Oriental Trading Company, Inc. | 256 | — | 1 |
| AS20210US | VITRUVIAN-HEALTH-01 - Vitruvian Health | 256 | — | 1 |
| AS54279US | SMT - SportsMEDIA Technology Corporation | 256 | — | 1 |
| AS36835US | NMF4L-1500 - Nugget Market | 256 | — | 1 |
| AS39941US | PACIFIC-WAVE - Pacific Wave | 256 | — | 1 |
| AS11088US | ICONNECT - iConnect | 256 | — | 1 |
| AS55065US | FORTHEALTHCARE-FTAWI - Fort HealthCare Inc | 256 | — | 1 |
| AS30065US | DIETZ-WATSON - Dietz & Watson, Inc. | 256 | — | 1 |
| AS27356US | PCCU-ASN-207-SUBNET - Park Community Credit Union, Inc. | 256 | — | 1 |
| AS395104US | DKM5-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS3627US | NRAO-AS - National Radio Astronomy Observatory | 256 | — | 1 |
| AS393726US | ASGN - On Assignment, Inc. | 256 | — | 1 |
| AS397105US | UHS-AS-01 - United Health Services Hospitals, Inc. | 256 | — | 1 |
| AS1096US | IZUMA-PROD-1 - Izuma Networks Inc. | 256 | — | 1 |
| AS401720US | UNREDACTED-AS - Unredacted Inc | 256 | 1 | 2 |
| AS394515US | MKT-CH2-NOC - Market Track LLC | 256 | — | 1 |
| AS14479US | OG-ASN-01 - The Oneida Group Inc. | 256 | — | 1 |
| AS396837US | SEAA18 - North Carolina State Education Assistance Authority | 256 | — | 1 |
| AS22479US | SUNYWCC - SUNY Westchester Community College | 256 | — | 1 |
| AS54095US | AUTO-OWNERS - Auto-Owners Insurance Company | 256 | — | 1 |
| AS22455US | ESL-FCU - ESL Federal Credit Union | 256 | — | 1 |
| AS29797US | LIFEYIELD-1 - SEI Investments Developments, INC | 256 | — | 1 |
| AS402622US | OSS-1 - Offline | 256 | 256 | 2 |
| AS54544US | WM-549-01 - Woodward McCoach Inc. | 256 | 1 | 2 |
| AS401547US | HCDL-BUFFALO-DATA-CENTER - H5 Data Centers | 256 | 256 | 2 |
| AS27135US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS393279US | TECHNOMAD-LLC-AS-1 - Technomad, LLC | 256 | — | 1 |
| AS25727US | RBNA-HQ - RED BULL NORTH AMERICA, INC. | 256 | — | 1 |
| AS401193US | USD305REQUEST - SALINA UNIFIED SCHOOL DISTRICT | 256 | — | 1 |
| AS14705US | ROXBURYCC-1234-MH - Roxbury Community College | 256 | — | 1 |
| AS393291US | KEMPER-DEVELOPMENT - Kemper Development Company | 256 | — | 1 |
| AS396090US | SEMINOLECOUNTY - Seminole County Government | 256 | — | 1 |
| AS31947US | SWANSON-HEALTH - Swanson Health Products Inc. | 256 | — | 1 |
| AS402440US | CYBERWOLF - Cyberwolf | 256 | 2 | 3 |
| AS32685US | AEG-VISION - AEG Vision | 256 | — | 1 |