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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 |
| AS393786US | THEDOCTORSCLINIC - The Doctors Clinic | 256 | — | 1 |
| AS54366US | FCB-ASN-54366-AP - First-Citizens Bank & Trust Company | 256 | — | 1 |
| AS399663US | KUEHN-NETWORKS - Kuehn Networks | 256 | 6 | 7 |
| AS397627US | CLOUDCONNECT - CloudConnect, LLC | 256 | — | 1 |
| AS397013US | ALEGEUS-02-US - ALEGEUS TECHNOLOGIES, LLC | 256 | — | 1 |
| AS396245US | KIRBYCORP - KIRBY CORPORATION | 256 | — | 1 |
| AS25850US | CARESTREAMHEALTH - Carestream Health, Inc. | 256 | — | 1 |
| AS54450US | MBLOX-US - MBLOX INC. | 256 | — | 1 |
| AS398279US | KITCHELL-CORP - KITCHELL CORPORATION | 256 | — | 1 |
| AS399422US | UNIVERSAL-HOLDINGS - Universal Insurance Holdings, Inc. | 256 | — | 1 |
| AS396945US | MIDWESTLABS - Midwest Laboratories | 256 | — | 1 |
| AS53613US | VIA-METRO-01 - VIA Metropolitan Transit | 256 | — | 1 |
| AS53515US | AMTELCO-204-27-231-AS - AMTELCO | 256 | — | 1 |
| AS53789US | LEBANON-OR - City of Lebanon | 256 | — | 1 |
| AS46429US | TPL-SOUTH - Tranquil Properties LLC | 256 | 32 | 3 |
| AS400753US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | — | 1 |
| AS401872US | RMC-836 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS1073US | SCLSA-ASN-01 - South Carolina Legislative Services Agency | 256 | — | 1 |
| AS12101US | PRS-ARIN-ASN - PROGRESS RAIL SERVICES Corporation | 256 | — | 1 |
| AS395843US | CHEROKEE-CO-GA-BOC - Cherokee County Board of Commissioners | 256 | — | 1 |
| AS400628US | ACSC1005 - Automobile Club of Southern California | 256 | — | 1 |
| AS401521US | KSWOTV - Gray Media, Inc. | 256 | — | 1 |
| AS399464US | MICROSULA - Microsula, Inc. | 256 | — | 1 |
| AS394718US | HISCOX - Hiscox Insurance Company Inc. | 256 | — | 1 |
| AS400071US | SIMON-TEL-AS - Simon Telephonics | 256 | 1 | 2 |
| AS33740US | TMGHEALTH-FTW - TMG Health, Inc | 256 | — | 1 |
| AS395352US | CAC-GR1 - Credit Acceptance Corporation | 256 | — | 1 |
| AS395834US | TDC-AS1 - Trondent Developement Corp | 256 | — | 1 |
| AS395775US | DOTHAN-CITY-01 - CITY OF DOTHAN | 256 | — | 1 |
| AS400637US | MO-LAGERS-01 - Missouri Local Government Employees Retirement System | 256 | — | 1 |
| AS61125US | SABOTAGE SABOTAGE LLC | 256 | 1 | 2 |
| AS399812US | LAER-AS-SIN1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS395480US | ALKEON-CAPITAL-MANAGEMENT-LLC - Alkeon Capital Management, LLC | 256 | — | 1 |
| AS14599US | SPRINT-CHARTER-CONNECTION - Besser Company | 256 | — | 1 |
| AS29798US | AS29798 - TenSpire Network | 256 | — | 1 |
| AS55152US | IFCJAS-01 - The Fellowship | 256 | — | 1 |
| AS394185US | BOU-BANCORP - Bank of Utah | 256 | — | 1 |
| AS14923US | AS-GTS-OK-01 - Graham Technology Solutions LLC | 256 | 256 | 2 |
| AS32305US | COOK-GROUP - COOK GROUP INC | 256 | — | 1 |
| AS54774US | PPK-CORP - PRINTPACK, Inc. | 256 | — | 1 |
| AS32650US | SANDHILLS-SW - SANDHILLS PUBLISHING | 256 | — | 1 |
| AS62890US | DREAM-IN-CODE - Dream in Code LLC | 256 | 65.5K | 2 |
| AS394816US | GROCERYOUTLET - Grocery Outlet Inc. | 256 | — | 1 |
| AS54426US | TOSA - Texas Organ Sharing Alliance | 256 | — | 1 |
| AS399124US | MAJES-20 - Majesco | 256 | — | 1 |
| AS26457US | NONEXISTE-AS - nonexiste.net | 256 | 21 | 6 |