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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 |
| 256 |
| — |
| 1 |
| AS397796US | GRMC-SC1 - Gila Regional Medical Center | 256 | — | 1 |
| AS29926US | CARROLL-COUNTY-SCHOOLS - Carroll County Board of Education | 256 | — | 1 |
| AS394295US | MOLNII - Federal Hill Solutions | 256 | — | 1 |
| AS30453US | INTERNET - Central Ohio Transit Authority | 256 | — | 1 |
| AS395998US | SCSLC - SOUTH CAROLINA STUDENT LOAN CORPORATION | 256 | — | 1 |
| AS18996US | CITY-OF-BAYTOWN - City of Baytown | 256 | — | 1 |
| AS400512US | OPELIKA-01 - City of Opelika | 256 | — | 1 |
| AS33615US | EVHC - Envision Healthcare Holdings, Inc | 256 | — | 1 |
| AS19922US | AS-OASIS - OASIS NETWORKS | 256 | — | 1 |
| AS32650US | SANDHILLS-SW - SANDHILLS PUBLISHING | 256 | — | 1 |
| AS54292US | SICO-AS - Starr International USA, Inc. | 256 | — | 1 |
| AS53750US | NEUMANN-UNIVERSITY - Neumann University | 256 | — | 1 |
| AS396400US | OLATHE-KS - City of Olathe | 256 | — | 1 |
| AS18517US | LIMRA-LOMA-LG18 - LL Global Inc | 256 | — | 1 |
| AS1067US | HC-CB-216 - Hamilton County, Ohio | 256 | — | 1 |
| AS20071US | KUXUEYUN-US - KUXUEYUN LLC | 256 | 17 | 3 |
| AS19779US | SGFD - St. George Fire Department | 256 | — | 1 |
| AS31858US | MWNA-ASN - MARSHALL WACE NORTH AMERICA L.P. | 256 | — | 1 |
| AS27154US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS402611US | ROOTNET - RootNet | 256 | 256 | 2 |
| AS13920US | CLOUDWISH - CloudWish LLC | 256 | — | 1 |
| AS400366US | FS846-ASN-01 - Freestyle Services LLC | 256 | 4.1K | 2 |
| AS40421US | PC-NETBLOCK - Providence College | 256 | — | 1 |
| AS53765US | SFFEDCU - San Francisco Federal Credit Union | 256 | — | 1 |
| AS393539US | SINCLAIR-SERVICES-PUBLIC - REH Services, LLC | 256 | — | 1 |
| AS393405US | SCCUSD-AS - Saint Charles Community Unit School District 303 | 256 | — | 1 |
| AS400452US | UC-DAVIS-HEALTH - University of California Davis Medical Center | 256 | — | 1 |
| AS395834US | TDC-AS1 - Trondent Developement Corp | 256 | — | 1 |
| AS393369US | RTVISION-ASN1 - RtVision, Inc. | 256 | — | 1 |
| AS20074US | PLNU-ASN - Point Loma Nazarene University | 256 | 16 | 2 |
| AS30251US | FALKEN - Falken Tire Corporation | 256 | — | 1 |
| AS62939US | PINKBIKE-US-DC1 - Outside Interactive Canada Inc. | 256 | — | 1 |
| AS399664US | EIS-ASN-01 - Eclipse Integrated Systems, Inc | 256 | — | 1 |
| AS394248US | S1-SUWANEE-DC - SiteOne Landscape Supply | 256 | — | 1 |
| AS394879US | PEMANET - Pennsylvania Emergency Management Agency | 256 | — | 1 |
| AS397684US | CLOUD-TECHNOLOGIES-INC - Cloud Technologies, Inc | 256 | — | 1 |
| AS40213US | TOOELECO - Tooele County | 256 | — | 1 |
| AS393915US | GRAND-AMERICA-PUBLIC - Grand America | 256 | — | 1 |
| AS46221US | MISCHOICE - MIS Choice, Inc. | 256 | — | 1 |
| AS36456US | VELOCITYCU - Velocity Credit Union | 256 | — | 1 |
| AS30138US | ARTECH-INFO - Artech Information Systems LLC | 256 | — | 1 |
| AS393453US | SMILEDIRECTCLUB-1 - Smile Direct Club, LLC | 256 | — | 1 |
| AS14582US | DICKINSON-FINANCIAL-CORPORATION - Dickinson Financial Corporation | 256 | — | 1 |
| AS62867US | ALDINEISD-ASN01 - Aldine Independent School District | 256 | — | 1 |
| AS13596US | RYMAX-CORP - Rymax Corp | 256 | — | 1 |
| AS402171US | GW-ALB-01 - Glitch Works, LLC | 256 | 1 | 2 |