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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS12230US | TABLEBOUND - Tablebound LLC | 256 | 256 | 2 |
| AS402913US | S-ANSTEY-TECH - S | 256 | — | 1 |
| AS16515US | ALTAVISTA - Yahoo Holdings Inc. | 256 | — | 1 |
| AS398992US | SAMA-1 - Share and Make Aware LLC | 256 | 4.1K | 2 |
| AS22073US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS46654US | OC-INTERNET - O'Charleys Inc. | 256 | — | 1 |
| AS400272US | GCYAZ - Gowan Company, L.L.C. | 256 | — | 1 |
| AS47047US | LCBS-01 - Lake County Broadband Solutions LLC | 256 | — | 1 |
| AS54377US | YGHCS - YGHCS (York General Healthcare Services) | 256 | — | 1 |
| AS395413US | DKM6-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS13439US | SCIREMC-CORP - SCI REMC | 256 | — | 1 |
| AS395779US | ARMINTL - ARMSTRONG INTERNATIONAL INC | 256 | — | 1 |
| AS399849US | BIZZARROAGENCY - BIZZARRO AGENCY LLC | 256 | — | 1 |
| AS394204US | FULTONFINANCIAL-ASN - FULTON FINANCIAL CORPORATION | 256 | — | 1 |
| AS46761US | SHORELAND - Shoreland, Inc. | 256 | — | 1 |
| AS398176US | JDS - JDS INDUSTRIES, INC | 256 | — | 1 |
| AS398539US | IDENTIDAD-NETWORK-SOLUTIONS - Identidad Telecom | 256 | — | 1 |
| AS398155US | WBR-LA-01 - West Baton Rouge Parish Council | 256 | — | 1 |
| AS395767US | SUNCAST - SUNCAST Corporation | 256 | — | 1 |
| AS393850US | CLEVERSAFE - IBM | 256 | — | 1 |
| AS395166US | AMERICANNATIONALBANK - American National Bank | 256 | — | 1 |
| AS32113US | AS-LEFRAK - The Lefrak Organization, Inc. | 256 | — | 1 |
| AS397134US | AIRONET-1 - AiroNet | 256 | — | 1 |
| AS30267US | CITY-WACO-01 - City of Waco | 256 | — | 1 |
| AS398393US | LIBBEY-ASN-01 - Libbey | 256 | — | 1 |
| AS26009US | CALIFORNIA-CREDIT-UNION - California Credit Union | 256 | — | 1 |
| AS21966US | SUNBELTRENTALS - Sunbelt Rentals | 256 | — | 1 |
| AS23041US | PENNHIGHLANDSCC - Pennsylvania Highlands Community College | 256 | — | 1 |
| AS15303US | NIKE-SECURITIES - First Trust Portfolios L.P. | 256 | — | 1 |
| AS46216US | ICECONSULTING - Ice Consulting | 256 | — | 1 |
| AS33595US | ASCENSION-TNNAS - Ascension Technologies | 256 | — | 1 |
| AS19569US | STAB-AS-001 - STABILUS | 256 | — | 1 |
| AS25863US | HUNTERENG - Hunter Engineering Company | 256 | — | 1 |
| AS46448US | TMC-104 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS46585US | JFKIAT-LLC - JFK International Air Terminal LLC | 256 | — | 1 |
| AS13817US | CCML-ASN - Cantillon Capital Management, LLC | 256 | — | 1 |
| AS211223US | WebSeed WebSeed Inc. | 256 | — | 1 |
| AS402716US | ZIPLINE-01 - Zipline | 256 | — | 1 |
| AS400671US | STYPR - stypr LLC | 256 | 2 | 3 |
| AS33396US | GENERAL-HEALTH-SYSTEMS - GENERAL HEALTH SYSTEM | 256 | — | 1 |
| AS30478US | AVT - Affinity VoIP Telecom, Inc. | 256 | — | 1 |
| AS19123US | OHIOTRANSMISSIONCORP - Ohio Transmission Corporation | 256 | — | 1 |
| AS53656US | FINGER-LAKES-HEALTH - Finger Lakes Regional Health System, Inc. | 256 | — | 1 |
| AS398185US | LAKESHORE-LEARNING - Lakeshore Learning Materials | 256 | — | 1 |
| AS26917US | COVENTRY-ASN - The Coventry Group, Inc. | 256 | — | 1 |
| AS14386US | COMGRAPHICS-CGICHICAGO - Com-graphics, Inc. | 256 | — | 1 |