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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS401227US | JOULEWORKS - Jouleworks | 256 | 3 | 4 |
| AS46769US | TELECAST COMMUNICATIONS - Telecast Communications | 256 | — | 1 |
| AS397919US | NETSPI-CORPORATE - NetSPI | 256 | 16 | 2 |
| AS40746US | OMI-ASN - Owensboro Messenger Inquirer | 256 | — | 1 |
| AS46820US | LRHNET1 - Littleton Regional Hospital | 256 | — | 1 |
| AS402492US | HOSTCRAM - HostCram | 256 | — | 1 |
| AS21986US | WPP-ET-CAMPUS-WASHINGTONDC - Young & Rubicam LLC | 256 | — | 1 |
| AS22525US | ATALANTA-SOSNOFF - Atalanta Sosnoff Capital, LLC | 256 | — | 1 |
| AS401879US | RACKNODE-AS - RackNode | 256 | 257 | 3 |
| AS400006US | DIGITAL-MONKS-01 - DigitalMonks LLC | 256 | 65.5K | 2 |
| AS401787US | OMNITEC - Omnitec Corporation | 256 | — | 1 |
| AS10851US | SJCB - St Johns County BOCC | 256 | 48 | 4 |
| AS14936US | CLOUDHQDATACENTERS - CloudHQ, LLC | 256 | — | 1 |
| AS398062US | SPTA-1-AS-1 - Southeastern Pennsylvania Transportation Authority | 256 | — | 1 |
| AS32198US | MFPS-POTATOROLLS-01 - Martin's Famous Pastry Shoppe, Inc. | 256 | — | 1 |
| AS399369US | KIRKLAND-ELLIS-PA - Kirkland & Ellis LLP | 256 | — | 1 |
| AS40505US | APXALARM-ASN - Vivint, Inc | 256 | — | 1 |
| AS397568US | CLEARCORRECT - ClearCorrect | 256 | 2 | 3 |
| AS397812US | LIT-CLOUD-01 - Live Information Technology Consulting Group, LLC | 256 | — | 1 |
| AS47058US | NETWORK-ENGINEER - THE GOOD SAMARITAN HOSPITAL OF LEBANON, PENNSYLVANIA | 256 | — | 1 |
| AS396907US | XANTERRA - XANTERRA Inc. | 256 | — | 1 |
| AS393334US | CCSD-ASN-201 - Camden City School District | 256 | — | 1 |
| AS16901US | MUTUAL - Mutual of Enumclaw Insurance Company | 256 | — | 1 |
| AS397059US | CNSC-PBI - Polar Bears International | 256 | — | 1 |
| AS19929US | VASTCOMM - VAST COMMUNICATIONS LLC | 256 | — | 1 |
| AS399119US | TOP-TVMASTERS - TV Masters, LLC | 256 | — | 1 |
| AS394382US | EL-DALLAS - Elevated Computing LLC | 256 | — | 1 |
| AS19417US | CENTR-65-ASN - Centra-Larm Monitoring, Inc. | 256 | — | 1 |
| AS395314US | AECC-SANJUANPOOLS-ASN - American Environmental Container Corp. | 256 | 256 | 2 |
| AS40868US | FCEC-ASN - Fannin County Electric Cooperative, Inc. | 256 | — | 1 |
| AS394108US | GMS-AS394108 - Gypsum Management and Supply, Inc. | 256 | — | 1 |
| AS26065US | ABA-1375 - Anchin, Block & Anchin LLP | 256 | — | 1 |
| AS31787US | MPORTHO - Microport Orthopedics, Inc. | 256 | — | 1 |
| AS21626US | CLEARSKYNETWORK - clearskynetwork | 256 | — | 1 |
| AS1065US | TANGERINE-LV - Tangerine Global | 256 | — | 1 |
| AS11387US | LAC - La Curacao | 256 | — | 1 |
| AS26440US | SPRAGUE-ENERGY - Sprague Operating Resources LLC | 256 | — | 1 |
| AS400977US | JCSMH-ASN-01 - Schneck Medical Center | 256 | — | 1 |
| AS22415US | AVANTWIRELESS - AvantWireless LLC | 256 | — | 1 |
| AS55269US | CST - Critical Signal Technologies, Inc | 256 | — | 1 |
| AS397392US | BJWSA-AS - BJWSA | 256 | — | 1 |
| AS33124US | STORMDADDYISP - Storm Daddy Residential Broadband LLC | 256 | — | 1 |
| AS401004US | DAB-OH-01 - Dabble Ventures | 256 | — | 1 |
| AS400298US | MADCITYSERVERS-LLC - Madcityservers LLC | 256 | 1 | 2 |
| AS394415US | TROYGROUP - TROY Group, Inc. | 256 | — | 1 |
| AS400057US | UPSTATE-NIAGARA-COOP-2021 - Upstate Niagara Cooperatives | 256 | — | 1 |