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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 768 |
| — |
| 2 |
| AS27330US | EQUINIX-EC-AT - Equinix, Inc. | 768 | 1 | 4 |
| AS11648US | CONECTIV-SCS - Conectiv Supply Chain Solutions, Inc. | 768 | — | 3 |
| AS54256US | VELOCITY-COMMUNICATIONS - Velocity Communications Inc. | 768 | 65.5K | 4 |
| AS22349US | ASN-DCSCORP - DCS Corporation | 768 | — | 2 |
| AS13435US | COMMUNITY-HEALTH-CHOICE - Community Health Choice, Inc. | 768 | — | 3 |
| AS54319US | ARXSYSTEMS-ASN01 - Arxsystems.Io LLC | 768 | 4.1K | 3 |
| AS7382US | MIENERGY - MiEnergy Cooperative | 768 | — | 2 |
| AS16760US | CBOE - Cboe | 768 | — | 3 |
| AS23078US | LOUDOUN-CNTY-VA-GOVT - County of Loudoun Virginia | 768 | — | 3 |
| AS40373US | UMC-NET - University Medical Center, Inc | 768 | — | 2 |
| AS53268US | EIS-SFO-AS - EIS Group, INC | 768 | — | 3 |
| AS394682US | CMP - Communications & Power Industries, LLC | 768 | — | 3 |
| AS400613US | APOG-STVC - Apogee Telecom Inc. | 768 | — | 2 |
| AS393342US | EA-ASHBURN - Electronic Arts, Inc. | 768 | — | 2 |
| AS400351US | EDIFECS - Edifecs, Inc. | 768 | — | 3 |
| AS399979US | AS-493NETWORKING - 49.3 Networking LLC | 768 | — | 3 |
| AS30402US | GLCNET - Global Link Communications Limited | 768 | — | 3 |
| AS402438US | VIYU-NETWORK-SOLUTIONS - Viyu | 768 | — | 2 |
| AS63355US | SALMON-BAY-TECHNOLOGY-01 - SALMON BAY TECHNOLOGY | 768 | — | 3 |
| AS16903US | TIGER-47 - Texas Southern University | 768 | — | 2 |
| AS398249US | ALI-01 - Airlink Internet, Inc. | 768 | — | 2 |
| AS21860US | FL-GRIP - FOLEY & LARDNER LLP | 768 | — | 3 |
| AS396421US | PAN0002 - PALO ALTO NETWORKS | 768 | — | 3 |
| AS401429US | PRIME-ONE - Prime One Net LLC | 768 | 1.3K | 7 |
| AS978US | SHAMROCK-TRADING-CORPORATION - Shamrock Trading Corporation | 768 | — | 3 |
| AS26189US | SCI-ASN - SCI Funeral & Cemetery Purchasing Cooperative, Inc. | 768 | — | 3 |
| AS14614US | STARKEY - Starkey Laboratories, Inc. | 768 | — | 3 |
| AS26791US | BADC-CLOUD - Synopsys Inc. | 768 | — | 2 |
| AS29985US | AMN-HEALTHCARE - AMN Healthcare | 768 | — | 2 |
| AS397281US | BJCCA-1 - Birmingham Jefferson Civic Center Authority | 768 | — | 2 |
| AS54030US | SUMMIT-SOL-ASN - Summit Solutions, LLC | 768 | — | 3 |
| AS35901US | AVTEX-INC-ASN - Avtex, Inc. | 768 | — | 3 |
| AS54131US | OKLAHOMA-HEART-HOSPITAL - Oklahoma Heart Hospital, LLC | 768 | — | 3 |
| AS394599US | FSN - Full Service Networking | 768 | — | 2 |
| AS36431US | PIH1 - PIH Health, Inc. | 768 | — | 2 |
| AS402319US | BYOIP-ASN - TAIPEI101 | 768 | 1 | 3 |
| AS394795US | COMM-SOLUTIONS - Communication Solutions, LLC | 768 | — | 3 |
| AS18600US | WPIA-NET - R. Fritz Enterprises Inc. | 768 | — | 3 |
| AS399502US | VALUEHOSTED-US - THE VALUE HOSTED LLC | 768 | 2 | 5 |
| AS39974US | ALTITUDE-ISP - Altitude ISP LLC | 768 | — | 3 |
| AS23004US | VIEWTRADE - VIEWTRADE SECURITIES | 768 | — | 3 |
| AS15251US | GRAND-CENTRAL-STATION - Grand Central Station Internet Services, Inc. | 768 | — | 3 |
| AS393777US | DIGIARCH - State of WA Secretary of State | 768 | — | 2 |
| AS22310US | LOI - LIFE Outreach International | 768 | — | 3 |
| AS397802US | CALBAPTIST - CALIFORNIA BAPTIST UNIVERSITY | 768 | — | 3 |
| AS25802US | WBD-AS25802 - Home Box Office | 768 | — | 3 |