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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 |
| SQUARESPACE-CORP-01 - Squarespace, Inc. |
| 256 |
| — |
| 1 |
| AS46168US | CALLTOWER - CallTower, Inc. | 256 | — | 1 |
| AS394763US | CCCERA-AS - Contra Costa County Employees Retirement Association | 256 | 1 | 2 |
| AS399872US | CULLMAN-REGIONAL-MEDICAL-CENTER - Cullman Regional | 256 | — | 1 |
| AS30671US | DATABRIDGE - Data Bridge Limited | 256 | 1 | 2 |
| AS6141US | GRINNELL-MUTUAL-REINSURANCE-COMPANY - Grinnell Mutual Reinsurance Company | 256 | — | 1 |
| AS398815US | CITY-OF-ALEXANDRIA - City of Alexandria | 256 | — | 1 |
| AS26065US | ABA-1375 - Anchin, Block & Anchin LLP | 256 | — | 1 |
| AS18571US | WESTERNRESERVEGROUP - The Western Reserve Mutual Casualty Company | 256 | — | 1 |
| AS399774US | ANDELYN-BIOSCIENCES-01 - Andelyn Biosciences, Inc. | 256 | — | 1 |
| AS62680US | CBJ-JUNEAU-AK - City & Borough of Juneau | 256 | — | 1 |
| AS5638US | BREWER-SCIENCE - Brewer Science | 256 | — | 1 |
| AS401721US | EVOLUTIONFIBER-US-TX - Evolution Fiber LLC | 256 | 64 | 2 |
| AS402397US | 17SOLUTIONS-LLC - 17 | 256 | 1 | 2 |
| AS21706US | KHHTE - Kellogg, Huber, Hansen, Todd & Evans, PLLC | 256 | — | 1 |
| AS21790US | TCABH-AS - The Church at Brook Hills | 256 | 16 | 2 |
| AS26369US | OTWA-AS - Otwa Cloud Inc. | 256 | — | 1 |
| AS402263US | MOGATREV-CO1 - Mogatrev LLC | 256 | — | 1 |
| AS46275US | ACU - AcuCall | 256 | — | 1 |
| AS395707US | CEJ-COMPUTER - CEJ Computer Business Systems, LLC | 256 | — | 1 |
| AS395210US | WESTERNCARRIERS-CA - Western Carriers Inc. | 256 | — | 1 |
| AS18890US | HOGARTH-WORLDWIDE - Hogarth Worldwide Inc | 256 | — | 1 |
| AS400986US | ADSYSTECH-AS-01 - Adsystech, Inc. | 256 | — | 1 |
| AS397910US | TSC - AEG | 256 | — | 1 |
| AS26759US | SAGOFIBER-01 - Sago Fiber LLC | 256 | 65.5K | 2 |
| AS394552US | TRSTPT-AS - TrustPoint International | 256 | — | 1 |
| AS22638US | PHILORCH-ASN - The Philadelphia Orchestra Association | 256 | — | 1 |
| AS399598US | LNS - Local Network Solutions, Inc. | 256 | 65.5K | 2 |
| AS395353US | RRCC - Red River Computer Co., Inc. | 256 | — | 1 |
| AS54474US | CITY-OF-SANTA-CRUZ - City of Santa Cruz | 256 | — | 1 |
| AS55210US | SAMC-HCHA - Southeast Alabama Medical Center | 256 | — | 1 |
| AS14308US | COL-ETS - City of Longmont | 256 | — | 1 |
| AS40520US | STBH-ORG - Saint Bernard Hospital | 256 | — | 1 |
| AS397127US | IRACING - IRACING.COM MOTORSPORT SIMULATIONS, LLC | 256 | 1 | 2 |
| AS46111US | EDINA-REALTY-HOME-SERVICES - Edina Realty, Inc. | 256 | — | 1 |
| AS62924US | COBNET-ASN-1 - City of Bryan, Texas | 256 | — | 1 |
| AS394894US | ANOKA-HENNEPIN-SCHOOLS - ANOKA-HENNEPIN PUBLIC SCHOOL DISTRICT | 256 | — | 1 |
| AS14180US | AS-KOGNITIVE - Kognitive Networks | 256 | — | 1 |
| AS14582US | DICKINSON-FINANCIAL-CORPORATION - Dickinson Financial Corporation | 256 | — | 1 |
| AS3408US | AMC-NETWORKS - Rainbow Media Holdings LLC | 256 | — | 1 |
| AS26997US | GPJOSEPH - Joseph Hage Aaronson LLC | 256 | — | 1 |
| AS1428US | DRW-HOLDINGS - DRW Holdings, LLC | 256 | — | 1 |
| AS402430US | HOX - Hox | 256 | 256 | 2 |
| AS27238US | KANE - Kane Warehousing, Inc | 256 | — | 1 |
| AS36846US | HQ-INET-TW-ATT - The Health Care Authority for Baptist Health, An Affiliate of UAB Health System | 256 | — | 1 |
| AS31847US | FAS-181 - Facility Automation Solutions, Inc. | 256 | — | 1 |
| AS4923US | AS-SCF-DC - SCF | 256 | — | 1 |