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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 |
| 256 |
| — |
| 1 |
| AS36347US | KYN-GTS-CBO-BOGOTA-CO - Kyndryl | 256 | — | 1 |
| AS40554US | NUSSTRUCK-1 - Nuss Truck Group Inc. | 256 | — | 1 |
| AS19094US | RESERVED-IPADMIN - Level 3 Parent, LLC | 256 | — | 1 |
| AS393267US | ATCC - American Type Culture Collection | 256 | — | 1 |
| AS53532US | CINNAMINSON-SCHOOLS - The Board of Education of the Township of Cinnaminson | 256 | — | 1 |
| AS198005US | Andrzejewski-David Andrzejewski David | 256 | 2 | 3 |
| AS32170US | SLVRMC - San Luis Valley Regional Medical Center | 256 | 1 | 2 |
| AS55018US | PRIME - Prime Holdings Insurance Services Inc | 256 | — | 1 |
| AS63354US | STLZOO - Saint Louis Zoo | 256 | — | 1 |
| AS40783US | CPC - Combined Public Communications, Inc. | 256 | — | 1 |
| AS14842US | BAUD-AS01 - Baudville, Inc. | 256 | — | 1 |
| AS54547US | BCCLS-AS - Bergen County Cooperative Library System | 256 | — | 1 |
| AS54878US | BIC-NET-13579 - Backlund Investment Co. | 256 | — | 1 |
| AS36603US | ARC-INTERNET - AIRLINES REPORTING CORPORATION | 256 | — | 1 |
| AS13985US | NASCO - NASCO | 256 | — | 1 |
| AS33376US | CASTLE-HARLAN - Castle Harlan | 256 | — | 1 |
| AS397748US | CMFHQ-ASN-01 - Country Music Foundation | 256 | 1 | 2 |
| AS402964US | EMORY-HENRY-UNIVERSITY - Emory | 256 | — | 1 |
| AS396837US | SEAA18 - North Carolina State Education Assistance Authority | 256 | — | 1 |
| AS394592US | DDAF-LEX - Dean Dorton | 256 | 1 | 2 |
| AS20133US | CASS-COL - CASS INFORMATION SYSTEMS | 256 | — | 1 |
| AS398498US | BANKOZK-ATL - Bank OZK | 256 | — | 1 |
| AS399415US | WPS-AS-01 - Westminster Public Schools | 256 | — | 1 |
| AS401193US | USD305REQUEST - SALINA UNIFIED SCHOOL DISTRICT | 256 | — | 1 |
| AS401720US | UNREDACTED-AS - Unredacted Inc | 256 | 1 | 2 |
| AS399365US | KIRKLAND-ELLIS-DA - Kirkland & Ellis LLP | 256 | — | 1 |
| AS54797US | AURORA-IL - CITY OF AURORA | 256 | — | 1 |
| AS36585US | CITY-OF-GREELEY - City of Greeley | 256 | — | 1 |
| AS400621US | YUHSD-ISP - Yuma Union High School District #70 | 256 | — | 1 |
| AS398641US | CHCFLORG-001 - Community Health Centers, Inc. | 256 | — | 1 |
| AS13785US | SMH - SHORE MEMORIAL HOSPITAL | 256 | — | 1 |
| AS22613US | GWU-055 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS11088US | ICONNECT - iConnect | 256 | — | 1 |
| AS395536US | TRIMARKASSOC - Trimark Associates, inc | 256 | — | 1 |
| AS26763US | DART-DALLAS - Dallas Area Rapid Transit (DART) | 256 | — | 1 |
| AS11945US | ASN-DEYOUNG - Corporation of the Fine Arts Museums | 256 | — | 1 |
| AS396131US | FERRE226-ARIN - Town of Hempstead | 256 | — | 1 |
| AS398269US | PAYERCOMPASS-01 - Voltaire Health, LLC | 256 | — | 1 |
| AS401044US | BLUETYPE - BlueType LLC | 256 | 1 | 2 |
| AS30080US | ARNOLD-MAGNETIC-TECHNOLOGIES-CORP-BGP - Arnold Magnetic Technologies Corporation | 256 | — | 1 |
| AS396941US | DRI-RSC - DARDEN CORPORATION | 256 | — | 1 |
| AS400937US | DCNV-ASN-01 - Douglas County, Nevada | 256 | — | 1 |
| AS394979US | ACELANET-1 - RiverStreet Networks | 256 | — | 1 |
| AS402038US | DNS-ASN-1 - Distributed Network Solutions LLC | 256 | — | 1 |
| AS395289US | KENTUCKY-FARM-BUREAU-MUTUAL-INSURANCE - Kentucky Farm Bureau Mutual Insurance | 256 | — | 1 |
| AS54169US | MGH-ION-1 - Marin General Hospital | 256 | — | 1 |