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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS31958US | NGNSYS-AS - NGNSYS, LLC | 256 | — | 1 |
| AS1646US | ABF - American Solutions for Business | 256 | — | 1 |
| AS397652US | SMSC - SMSC | 256 | — | 1 |
| AS26533US | STIBARC-AS-01 - STiBaRC | 256 | 5 | 6 |
| AS12159US | SECURITIESAMERICA - Securities America Inc. | 256 | 1 | 2 |
| AS399596US | APOG-MUSKINGUM - Apogee Telecom Inc. | 256 | — | 1 |
| AS14993US | MHASN4-01 - Millennium Health, LLC | 256 | — | 1 |
| AS6645US | OLEAN-GENERAL-HOSPITAL - OLEAN GENERAL HOSPITAL | 256 | — | 1 |
| AS32434US | IMP-NET - Imperial Network | 256 | 256 | 2 |
| AS399042US | YANCEYBROSCO-01 - Yancey Bros Co | 256 | — | 1 |
| AS397396US | DATA-CENTER-INC-ASN-01 - Data Center, Inc. | 256 | — | 1 |
| AS32294US | CITY-OF-CHAMPAIGN-IL - City of Champaign, Illinois | 256 | — | 1 |
| AS17271US | SPSCOMMERCE - SPS Commerce, Inc. | 256 | — | 1 |
| AS36397US | PALMETTO-CITIZENS-FCU - Palmetto Citizens Federal Credit Union | 256 | — | 1 |
| AS22630US | TLWIFI - TENMILE LAKE WIFI CORP. | 256 | 256 | 2 |
| AS18480US | GDT-AS - General Datatech, LP | 256 | — | 1 |
| AS400882US | AS-CYBER-DATA - Cyber Data LLC | 256 | 1 | 2 |
| AS401829US | PIPEWORKS-01 - Pipeworks Inc. | 256 | 1 | 2 |
| AS22076US | NEWSBANK - NewsBank Inc. | 256 | — | 1 |
| AS398438US | MGCCC - Mississippi Gulf Coast Community College | 256 | — | 1 |
| AS63478US | DKH-PUT-ASN - Day Kimball Hospital | 256 | — | 1 |
| AS27394US | NHDSC-ORG - Northern Hospital District of Surry County | 256 | — | 1 |
| AS22350US | ECMD - ECMD INC. | 256 | — | 1 |
| AS62990US | STCHARLESHEALTHSYSTEM - St. Charles Health System, Inc. | 256 | — | 1 |
| AS18524US | SAM-MEMPHIS - SOUTHEASTERN ASSET MANAGEMENT, INC. | 256 | — | 1 |
| AS395398US | PCSD-NETWORK - Putnam County School District | 256 | — | 1 |
| AS218613US | BOCCHI-SH Bocchi Network LLC | 256 | — | 1 |
| AS26319US | CHFCU - CoastHills Federal Credit Union | 256 | — | 1 |
| AS54350US | GALLATINSTEEL - Gallatin Steel Company | 256 | — | 1 |
| AS11004US | CITY-OF-GOLDEN-01 - City of Golden | 256 | — | 1 |
| AS54264US | LIFECHURCH - LIFE COVENANT CHURCH, INC | 256 | — | 1 |
| AS395112US | BEAUMONT-ISD-01 - Beaumont ISD | 256 | — | 1 |
| AS60808US | AP-2440-60808 - Anthropic, | 256 | — | 1 |
| AS31964US | CG-AS - The Imagine Group, LLC | 256 | — | 1 |
| AS396214US | HOSPITALFORSPECIALCARE - Hospital for Special Care | 256 | — | 1 |
| AS401582US | SANJOSESHARKS-ASN-01 - San Jose Sharks, LLC | 256 | — | 1 |
| AS398828US | MHC-MAIN-AZ - Marana Health Center, INC | 256 | — | 1 |
| AS11965US | COA-NET - City of Aspen | 256 | — | 1 |
| AS53701US | TRINITY-WASHINGTON-UNIVERSITY - Trinity Washington University | 256 | — | 1 |
| AS401576US | BITRIOT - Bitriot LLC | 256 | — | 1 |
| AS151975US | EAAPPL-AS-AP - Electronic Arts Inc. | 256 | — | 1 |
| AS401963US | VVHOSP - VALLEY VIEW HOSPITAL ASSOCIATION | 256 | — | 1 |
| AS399763US | FIVESTAR-TIERPOINT-01 - Issues Management, Inc. | 256 | — | 1 |
| AS401722US | OPTYXBROADBAND-TX - Optyx Broadband Inc. | 256 | — | 1 |
| AS63279US | XKEY - XKEY | 256 | 354 | 10 |
| AS399617US | DALLAS-COUNTY-DATA - Satellite Center, LLC | 256 | — | 1 |