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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 | 3,140 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,178 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,946 |
| AS701US | UUNET - Verizon Business | 43.6M | 999 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,371 |
| 768 |
| — |
| 3 |
| AS63209US | KN-CLT-ASN - KODIAK NETWORKS, INC. | 768 | — | 3 |
| AS396299US | THE-IMAGINE-GROUP - The IMAGINE Group, LLC | 768 | — | 3 |
| AS16659US | CROWN-AS-1 - Crown Castle USA | 768 | — | 3 |
| AS11842US | REGAL-ENTERTAINMENT-AS - Regal Entertainment Group | 768 | — | 3 |
| AS393560US | AKAMAI-TEST - Akamai Technologies, Inc. | 768 | 2 | 5 |
| AS33603US | DOMINOS-WRC-BLK01 - DOMINOS PIZZA, LLC | 768 | — | 3 |
| AS46268US | PADRES-01 - San Diego Padres | 768 | — | 2 |
| AS401539US | KLUST-US-DE1 - Corvex, Inc. | 768 | — | 2 |
| AS35958US | CCN42 - MCCARRAN INTERNATIONAL AIRPORT | 768 | — | 3 |
| AS22349US | ASN-DCSCORP - DCS Corporation | 768 | — | 2 |
| AS18731US | CITYSIDE-01 - Cityside Fiber | 768 | 65.5K | 4 |
| AS398850US | CHEYNEY-UNIVERSITY-OF-PA - Cheyney University Of Pennsylvania | 768 | 4.1K | 3 |
| AS396281US | AGCOMTECH - AGILITY COMMUNICATIONS AND TECHNOLOGY SERVICES COMPANY | 768 | — | 3 |
| AS54116US | STROM - Strom Holdings LLC | 768 | 1 | 5 |
| AS54030US | SUMMIT-SOL-ASN - Summit Solutions, LLC | 768 | — | 3 |
| AS32141US | REDROBIN-1 - Red Robin Gourmet Burgers | 768 | — | 3 |
| AS63355US | SALMON-BAY-TECHNOLOGY-01 - SALMON BAY TECHNOLOGY | 768 | — | 3 |
| AS400509US | ASIPFB - IPFB LLC | 768 | 1 | 4 |
| AS399115US | AOP - AOP | 768 | — | 2 |
| AS25957US | KISARA-NETWORK-01 - Kisara Development LLC | 768 | 65.5K | 12 |
| AS13435US | COMMUNITY-HEALTH-CHOICE - Community Health Choice, Inc. | 768 | — | 3 |
| AS394682US | CMP - Communications & Power Industries, LLC | 768 | — | 3 |
| AS398017US | RTBHOUSE-PHX - RTB House Inc. | 768 | 1 | 3 |
| AS397085US | SIGUS - Signal Restoration Services | 768 | 256 | 4 |
| AS397802US | CALBAPTIST - CALIFORNIA BAPTIST UNIVERSITY | 768 | — | 3 |
| AS397192US | HTUL-CDN-01 - Hillside (Shared Services US) LLC | 768 | — | 3 |
| AS402289US | WEBGIST - Webgist LLC | 768 | — | 3 |
| AS29985US | AMN-HEALTHCARE - AMN Healthcare | 768 | — | 2 |
| AS397290US | HFCU - Honda Federal Credit Union | 768 | — | 3 |
| AS399544US | PEOPLENTECH-LLC - PeopleNTech, LLC | 768 | 51 | 54 |
| AS55218US | IWISP-LLC - iWiSP llc | 768 | 4.1K | 4 |
| AS32180US | ROCKET-SIRIUS - ROCKET SOFTWARE INC | 768 | — | 2 |
| AS394328US | BMC-PHX - BMC Software, Inc. | 768 | — | 3 |
| AS54268US | CAPITALHEALTH - Capital Health System, Inc | 768 | — | 3 |
| AS393342US | EA-ASHBURN - Electronic Arts, Inc. | 768 | — | 2 |
| AS36711US | FIRST-ACCEPTANCE-CORP - FIRST ACCEPTANCE INSURANCE COMPANY OF TENNESSEE, INC. | 768 | 16 | 4 |
| AS32957US | AVSL-AS32957 - FactSet Research Systems, Inc. | 768 | — | 3 |
| AS15096US | SONN Steven Noble | 768 | 2 | 5 |
| AS397281US | BJCCA-1 - Birmingham Jefferson Civic Center Authority | 768 | — | 2 |
| AS32397US | OCHIN-PDX - OCHIN, INC | 768 | — | 3 |
| AS21664US | AMZN-BYOASN - Amazon.com, Inc. | 768 | 1 | 4 |
| AS22602US | EXPERIENT-INC - Experient Inc. | 768 | — | 2 |
| AS393667US | FARSIGHT - Farsight Security, Inc | 768 | 3 | 6 |
| AS42874US | GILEAD Gilead Sciences, Inc. | 768 | — | 3 |
| AS400351US | EDIFECS - Edifecs, Inc. | 768 | — | 3 |
| AS19681US | DIGGIO - Networkitects, Inc. | 768 | 65.5K | 3 |