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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 |
| AS393367US | SJMC-TCHD-3 - Teton County Hospital District | 256 | — | 1 |
| AS16752US | EZXAS - EZX, Inc. | 256 | — | 1 |
| AS40368US | NIXCON-GROUP-LLC - Nixcon | 256 | — | 1 |
| AS27164US | INTERACTIVE BROKERS CORP - Interactive Brokers Corp | 256 | — | 1 |
| AS14272US | MCPC-ASN - MCPc Inc. | 256 | — | 1 |
| AS398771US | FLASHTALKING - Flashtalking, Inc. | 256 | — | 1 |
| AS27137US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS400283US | ENDLESS-GROUP - Endless Group | 256 | 256 | 2 |
| AS276US | OTS-AS-276 - University of Texas System | 256 | — | 1 |
| AS402546US | RACKBYTE - RackByte | 256 | 65.5K | 3 |
| AS53888US | RPA-ASN - RUBIN POSTAER AND ASSOCIATES | 256 | — | 1 |
| AS395728US | PHX-ASN - District Photo, Inc. | 256 | — | 1 |
| AS393602US | CREE-DURHAM-01 - Cree, Inc. | 256 | — | 1 |
| AS402019US | JEROME-COUNTY-ID - Jerome County Idaho | 256 | 4.1K | 2 |
| AS21867US | LIGHTPATH-COLUMBUS - Cablevision Lightpath LLC | 256 | — | 1 |
| AS46242US | SAFEWAYINS1 - Safeway Insurance Group | 256 | — | 1 |
| AS26440US | SPRAGUE-ENERGY - Sprague Operating Resources LLC | 256 | — | 1 |
| AS20304US | LEPTON-GLOABL-SOLUTIONS-2012 - Lepton Global Solutions, LLC. | 256 | — | 1 |
| AS400712US | MAXIM-HOMECARE - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS54168US | CHB-WAN - CORNHUSKER BANK | 256 | — | 1 |
| AS13992US | SLPT1 - SailPoint Technologies, Inc. | 256 | — | 1 |
| AS54626US | ANALOG DEVICES - Analog Devices, Inc. | 256 | — | 1 |
| AS396261US | UNIVERSITY-OF-KENTUCKY-RESEARCH-COMPUTING - University of Kentucky Research Computing | 256 | — | 1 |
| AS398550US | ICCMS - Itawamba Community College | 256 | — | 1 |
| AS400831US | PINGITS - Ping ITS, LLC | 256 | 1 | 2 |
| AS30299US | THE-MARTIN-AGENCY-HQ - THE MARTIN AGENCY | 256 | — | 1 |
| AS394519US | GRUVE-AI - Gruve | 256 | — | 1 |
| AS54558US | HONL-621 - Healthcare Outsourcing Network, L.L.C | 256 | — | 1 |
| AS901US | FSTRF14541 - Frontier Science and Technology Research Foundation, Inc. | 256 | — | 1 |
| AS395010US | OPC-PHX - Oracle Corporation | 256 | — | 1 |
| AS33032US | AMI - American Megatrends, Inc. | 256 | — | 1 |
| AS16407US | LINDEN-ADVISORS - Linden Investors LP | 256 | — | 1 |
| AS394287US | FOURPOINT - FourPoint Energy, LLC | 256 | — | 1 |
| AS401349US | ZOLL-LIFEVEST - ZOLL Medical Corporation | 256 | 1 | 2 |
| AS394537US | DOW-CREDIT-UNION-01 - Dow Credit Union | 256 | — | 1 |
| AS400057US | UPSTATE-NIAGARA-COOP-2021 - Upstate Niagara Cooperatives | 256 | — | 1 |
| AS394290US | NBS-92 - Nightingale-Bamford School | 256 | — | 1 |
| AS399476US | BETHESDA - Bethesda Wireless and Fiber | 256 | — | 1 |
| AS36188US | ABL-AS - Alston & Bird, LLP | 256 | — | 1 |
| AS402239US | TECHLOQ-US-02 - Techloq Limited | 256 | 256 | 2 |
| AS27622US | RSA-AL - Retirement Systems of Alabama | 256 | — | 1 |
| AS6302US | AGP-AS1 - AG PROCESSING INC., A COOPERATIVE | 256 | — | 1 |
| AS27396US | ASSOCI-BR-AS1 - Associated Grocers | 256 | — | 1 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS47082US | BSKB-FC-AS - Birch, Stewart, Kolasch & Birch, LLP | 256 | — | 1 |
| AS63207US | LBJI-ASN - Lakeshore Bone & Joint, Institute P.C. | 256 | — | 1 |