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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) | 227.5M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,285 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,310 |
| 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.
32,244 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,356 |
| 1K |
| 51 |
| 10 |
| AS399399US | LUXOTTICA-NA - Luxottica of America Inc. | 1K | — | 4 |
| AS214140US | Yaman-Hosting-LLC Yaman Hosting LLC | 1K | — | 4 |
| AS400182US | 360-CONDOMINIUMS - 360 Condominiums | 1K | — | 1 |
| AS18976US | UNICOM-SYSTEMS-INC - UNICOM Systems Inc. | 1K | — | 4 |
| AS62942US | CARRIERX-MI-01 - FreeConferenceCall.com | 1K | — | 3 |
| AS14424US | ANDERINGERSTA - A.N. Deringer, Inc. | 1K | — | 2 |
| AS401254US | NETSOLV-NETSOLV-01 - NETSOLVE NETWORK TECHNOLOGY LIMITED | 1K | — | 4 |
| AS36253US | DCIUNET - Delaware County Intermediate Unit | 1K | — | 1 |
| AS396270US | TCSP-PROD-AS - TrustCommerce | 1K | — | 4 |
| AS54224US | ALPINEBK-ALPINE-BAN - Alpine Banks of Colorado | 1K | — | 3 |
| AS400539US | HESD - Harney Education Service District Region XVII | 1K | — | 4 |
| AS397556US | IAA - Insurance Auto Auctions, Inc | 1K | 1 | 5 |
| AS14013US | EPSON-ROBOTS - EPSON America (Factory Automation/Robotics) | 1K | — | 1 |
| AS32535US | GAYLORD-ROCKIES-01BGPFO - Gaylord Rockies Resort & Convention Center | 1K | — | 1 |
| AS26023US | SCHWANS-SHARED-SERVICES - Schwan's Shared Services, LLC. | 1K | — | 4 |
| AS40454US | MMUIA-NET-15 - Manning Municipal Utilities | 1K | — | 1 |
| AS22671US | AAAS - American Association for the Advancement of Science (AAAS) | 1K | — | 3 |
| AS18488US | VTLA - NTT Global Networks Incorporated | 1K | — | 4 |
| AS393989US | 3NOM-WEST - 3nom | 1K | — | 4 |
| AS206331US | EHOSTINGONLINE E-Hosting Online LLC | 1K | — | 4 |
| AS18562US | HAWTHORNE - Hawthorne Residents Cooperative Association Inc | 1K | — | 1 |
| AS394927US | AFFINION-GROUP - Affinion Group, Inc. | 1K | — | 4 |
| AS53941US | ACC-INET - Accertify, Inc. | 1K | — | 4 |
| AS396011US | NISOURCE-CORPORATE-SERVICES-COMPANY - NiSource Corporate Services Company | 1K | — | 4 |
| AS27271US | URNA-1 - United Rentals (North America), Inc. | 1K | — | 3 |
| AS206819US | markahost-llc Markahost LLC | 1K | — | 1 |
| AS399518US | HAWAIIPACIFICHEALTH-ASN-01 - Straub Clinic & Hospital | 1K | — | 4 |
| AS3938US | NTTA-3936 - NTT America, Inc. | 1K | 1 | 2 |
| AS7317US | CSPS-AS - The First Church of Christ, Scientist | 1K | — | 4 |
| AS25889US | BXS-NET-AS - BancorpSouth, Inc. | 1K | — | 2 |
| AS39954US | GATEWAYTC - Gateway Technical College | 1K | — | 4 |
| AS397011US | US-TX-UCAAS-XCHANGE-FW - Mavenir Systems, Inc. | 1K | — | 4 |
| AS31817US | PSC - Progress Software Corp - CSG | 1K | — | 2 |
| AS22171US | IPSV-ASN1 - IP Services | 1K | — | 1 |
| AS36858US | NMSTN - Office of Broadband Access and Expansion | 1K | 65.5K | 5 |
| AS33627US | VISTEON - VISTEON CORPORATION | 1K | — | 4 |
| AS393456US | X - United States Steel Corporation | 1K | — | 4 |
| AS11354US | CAROLINAS-HEALTHCARE-SYSTEM - Carolinas Healthcare System | 1K | — | 2 |
| AS14233US | ANCESTRY-INC - Ancestry.com., Inc. | 1K | — | 1 |
| AS19941US | CONCORDIA-UNIVERSITY-CHICAGO - Concordia University Chicago | 1K | — | 1 |
| AS29753US | BROISDTXASN - Brownsville Independent School District | 1K | — | 1 |
| AS18612US | TRI-NET-SOLUTIONS - Tri-Net Solutions LLC. | 1K | — | 1 |
| AS20306US | ADELPHI - Adelphi University | 1K | 5 | 6 |
| AS40939US | P2PPSR - Project Babbage | 1K | 256 | 4 |
| AS33674US | COGNEX-HQ - Cognex Corporation | 1K | — | 4 |
| AS11794US | 3C-WIRELESS - 3C Wireless, LLC | 1K | — | 1 |