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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 |
| 512 |
| — |
| 2 |
| AS31922US | DATTO-ENT - Datto, LLC | 512 | — | 2 |
| AS395157US | ITCS-IBONE-IN-TOUCH-COMPUTER-SERVICES-INC - In-Touch Computer Services, Inc | 512 | — | 2 |
| AS29996US | APORTER - Arnold & Porter Kaye Scholer LLP | 512 | — | 2 |
| AS33411US | BRIGHTPATTERNSC - Bright Pattern, Inc | 512 | — | 2 |
| AS400564US | WESTONREED - Weston Reed, Sole Proprietorship | 512 | 1 | 3 |
| AS35909US | ERGOS-TECHNOLOGY - ERGOS Technology Partners | 512 | — | 1 |
| AS397146US | FARMCREDIT-MIDAMERICA - Farm Credit Mid-America | 512 | — | 2 |
| AS30672US | AS30672 - QMACS | 512 | — | 2 |
| AS395928US | PROV-EQUITY - Providence Equity Partners LLC | 512 | — | 2 |
| AS21990US | LIBERTYSECURITY-1 - Liberty Security Services LLC | 512 | — | 1 |
| AS396976US | BYNUM-DR-01 - AOD Federal Credit Union | 512 | — | 2 |
| AS394916US | PHLAIRPORT - Philadelphia International Airport | 512 | — | 2 |
| AS46362US | CSIU-AS-NUM - Central Susquehanna Intermediate Unit | 512 | — | 2 |
| AS400695US | APOG-FAYETTEVILLE - Apogee Telecom Inc. | 512 | — | 1 |
| AS26533US | STIBARC-AS-01 - STiBaRC | 512 | 5 | 7 |
| AS18971US | BCUS - BARCLAYS FINANCIAL CORP. | 512 | — | 2 |
| AS397616US | CITY-OF-PRESCOTT-AZ - CITY OF PRESCOTT | 512 | — | 2 |
| AS11385US | LUNA-CDN - Luna USA, LLC | 512 | — | 2 |
| AS30255US | NYGC - New York Genome Center, Inc. | 512 | — | 2 |
| AS64223US | MITCON - MITCON LLC | 512 | — | 2 |
| AS399566US | BIGCOMMERCE - Bigcommerce Inc. | 512 | — | 2 |
| AS393448US | LIBERALLY-SINGAPORE - Liberally Network, LLC | 512 | 3 | 5 |
| AS402410US | COMPATIBLE-NETWORK - Compatible | 512 | 49 | 6 |
| AS18920US | HEI - Hawaiian Electric Industries, Inc. | 512 | — | 2 |
| AS400236US | EACS-5 - East Allen County Schools | 512 | — | 2 |
| AS393323US | WATERFURNACE - Waterfurnace International, Inc | 512 | — | 2 |
| AS21698US | TURBONET-NETWORK - TurboNet | 512 | — | 2 |
| AS619US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS401442US | SPUR - Spur Intelligence Corporation | 512 | 3 | 5 |
| AS393567US | AS-EQX-ATLC-01 - Atlanticus Holdings Corporation | 512 | — | 2 |
| AS54469US | COV-ISP - City of Vacaville | 512 | — | 2 |
| AS397670US | CVCU-ASN - Covantage Credit Union | 512 | — | 1 |
| AS397691US | CGMUS - CompuGroup Medical Inc. | 512 | — | 2 |
| AS394064US | AECI - Associated Electric Cooperative, Inc. | 512 | — | 2 |
| AS402806US | DUOCIRCLE - DuoCircle | 512 | — | 2 |
| AS47029US | CAPSTONE - Capstone Logistics, LLC | 512 | — | 2 |
| AS22621US | UNIGROUP - UniGroup, INC | 512 | — | 2 |
| AS29972US | MOREHOUSEMEDICAL - Morehouse School of Medicine | 512 | — | 2 |
| AS20052US | ARBOR - Arbor Networks, Inc. | 512 | — | 1 |
| AS26700US | FORTRESSAS - FORTRESS INVESTMENT GROUP LLC | 512 | — | 2 |
| AS18870US | GWB - Great Western Bank | 512 | — | 2 |
| AS394981US | CONTINENTAL-RESOURCES-INC-2 - Continental Resources, Inc. | 512 | — | 2 |
| AS397098US | ISLANDCLOUD - Island I.T. Solutions, LLC | 512 | — | 2 |
| AS399462US | SUMOFIBER-TEXAS - Sumofiber | 512 | — | 2 |
| AS17033US | CSL-ASN-AS17033 - CSL Behring L.L.C | 512 | — | 2 |
| AS26998US | NFII-ASN - NFI Industries, Inc | 512 | — | 2 |