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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 |
| 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 |
| AS46594US | BIS-CORP - Business Information Systems, Inc. | 256 | — | 1 |
| AS393743US | ADVANCED-ICU-CARE - Advanced ICU Care, Inc. | 256 | — | 1 |
| AS1012US | MOE-BGP - Moe BGP Co. | 256 | — | 1 |
| AS17384US | CV - Wave | 256 | — | 1 |
| AS63279US | XKEY - XKEY | 256 | 354 | 10 |
| AS393722US | SUMMT-ORTHO - Summit Ortho | 256 | — | 1 |
| AS63234US | IROBOT-2014 - iRobot Corporation | 256 | — | 1 |
| AS393683US | CURRYCOLLEGE - Curry College | 256 | — | 1 |
| AS21796US | WIT-ASN-01 - WITHAM HOSPITAL | 256 | — | 1 |
| AS32759US | UNITED-COMMUNITY-BANKS - United Community Bank | 256 | — | 1 |
| AS40872US | BERNARDS-NETWORK - Bernards | 256 | — | 1 |
| AS46919US | QRM - Quantitative Risk Management, Incorporated | 256 | — | 1 |
| AS46204US | MWE - McDermott, Will, and Emery | 256 | — | 1 |
| AS21805US | MRHAMEL - Ryan Hamel | 256 | 512 | 3 |
| AS399242US | CODINGFLYBOY-LLC - CodingFlyBoy LLC | 256 | 1 | 2 |
| AS21957US | KEATONAGLAIR-EHRE-ZWEI - Keaton Alexander Guger Lair | 256 | 4 | 5 |
| AS393838US | LPH-LIBERTYPUMPS - Liberty Pumps, Inc. | 256 | 1 | 2 |
| AS401219US | COCHISE-CONNECT - Cochise Connect LLC | 256 | 4.1K | 2 |
| AS29957US | STANFORD-UC - Stanford University | 256 | — | 1 |
| AS19861US | WCBE - Washington County Board of Education | 256 | — | 1 |
| AS26078US | JRTHOMPSON-NOC - J.R. Thompson Company | 256 | — | 1 |
| AS401728US | FCFCU - First Commonwealth Federal Credit Union | 256 | 1 | 2 |