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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| AS14688 - GlobalView Software Inc. |
| 256 |
| — |
| 1 |
| AS394024US | ASHA-HQ - American Speech-Language-Hearing Association | 256 | — | 1 |
| AS36863US | ABC-BITS-WC - American Broadcasting Companies, Inc. | 256 | — | 1 |
| AS401012US | LTIS-BB - Laurens Technologies Internet Services | 256 | 267 | 13 |
| AS394843US | TECH-OUTFITTER - Technology Outfitter, LLC | 256 | — | 1 |
| AS63206US | INOVA-AS - INOVA Federal Credit Union | 256 | — | 1 |
| AS397856US | MEMORIAL-HOSPITAL-HEALTH-CARE-CENTER - Memorial Hospital and Health Care Center | 256 | — | 1 |
| AS395498US | FLORIDAMARINE - Florida Marine | 256 | — | 1 |
| AS33469US | EDMUNDS-ASN - EDMUNDS.COM | 256 | — | 1 |
| AS63108US | MMRSAG-10 - Mobile Medical Response Inc | 256 | — | 1 |
| AS397927US | GPB-HQ-01 - Georgia Public Broadcasting | 256 | — | 1 |
| AS27455US | WT-ASN - Williams Trading LLC | 256 | — | 1 |
| AS29723US | GARVIN-GROUNDS-II - Garvin Grounds II, LLC | 256 | — | 1 |
| AS30453US | INTERNET - Central Ohio Transit Authority | 256 | — | 1 |
| AS18544US | NKTR-AS01 - Nektar Therapeutics | 256 | — | 1 |
| AS19541US | EA-ONLINE-NA1 - Electronic Arts, Inc. | 256 | — | 1 |
| AS656US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS27413US | NTHL - NETWORK TRANSIT HOLDINGS LLC | 256 | 4.1K | 2 |
| AS27592US | RPI-BGP - Reliable Parts Inc. | 256 | — | 1 |
| AS401119US | MARRINERTECH - Marriner Technology Solutions | 256 | 256 | 2 |
| AS398198US | MORAE-GLOBAL-CE - Morae Global | 256 | — | 1 |
| AS401640US | BULKVM - BULKVM LLC | 256 | 1 | 2 |
| AS18996US | CITY-OF-BAYTOWN - City of Baytown | 256 | — | 1 |
| AS25725US | EINK - E INK CORPORATION | 256 | — | 1 |
| AS46200US | ITC-146 - IT Curves | 256 | — | 1 |
| AS46697US | ACNR-01 - American Consolidated Natural Resources, Inc. | 256 | — | 1 |
| AS32763US | BS32BJB-HF - Building Service 32BJ Benefit Funds | 256 | — | 1 |
| AS400711US | SUTTON-BANK-01 - Sutton Bank | 256 | — | 1 |
| AS402795US | SHARETEC-64-95-156 - Sharetec, | 256 | — | 1 |
| AS11395US | THIEL-AS - Thiel College | 256 | — | 1 |
| AS23206US | HCCC-AS - Highlands County Clerk of Courts | 256 | — | 1 |
| AS22420US | RWNY-AS - Resorts World Casino New York City | 256 | — | 1 |
| AS1883US | STUPI STUPI LLC | 256 | — | 1 |
| AS1430US | BB0-BOSTON - Board of Bar Overseers | 256 | — | 1 |
| AS36625US | KGTLD - VeriSign Global Registry Services | 256 | 6 | 7 |
| AS394387US | VUU - Virginia Union University | 256 | — | 1 |
| AS22045US | NYCERS - New York City Employees' Retirement System | 256 | — | 1 |
| AS40754US | HENRYCOUNTYGA - Henry County, Georgia | 256 | — | 1 |
| AS394709US | HE-AS1 - HealthEdge Software, Inc. | 256 | — | 1 |
| AS398746US | HARRIS-AS-01 - HARRIS & HARRIS, LTD. | 256 | — | 1 |
| AS396927US | MCCUHOUTX - Members Choice Credit Union | 256 | — | 1 |
| AS396257US | CHURCH-OF-THE-NAZARENE-INC - General Board of The Church of The Nazarene | 256 | — | 1 |
| AS395465US | APOG-UNCC-SOUTH - Apogee Telecom Inc. | 256 | — | 1 |
| AS31858US | MWNA-ASN - MARSHALL WACE NORTH AMERICA L.P. | 256 | — | 1 |
| AS403084US | LAYEREDNET - LayeredNet | 256 | — | 1 |
| AS22590US | SKAGIT-COUNTY-PHD-2-WA - Island Health | 256 | — | 1 |
| AS397487US | RAVENS-ASN - Baltimore Ravens Limited Partnership | 256 | — | 1 |