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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. | 218M | 24,632 |
| 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.
32,210 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 | 4,359 |
| 256 |
| — |
| 1 |
| AS18890US | HOGARTH-WORLDWIDE - Hogarth Worldwide Inc | 256 | — | 1 |
| AS402183US | BEAZER-250 - BEAZER GENERAL SERVICES, INC. | 256 | — | 1 |
| AS54019US | ASN-WEIS - Weis Markets, Inc | 256 | — | 1 |
| AS401995US | ACH-ASN-01 - Arkansas Children's Hospital | 256 | — | 1 |
| AS394439US | BMCSAAS-US - BMC Software, Inc. | 256 | — | 1 |
| AS33124US | STORMDADDYISP - Storm Daddy Residential Broadband LLC | 256 | — | 1 |
| AS22007US | TJG-LCO - The Jay Group, Inc. | 256 | — | 1 |
| AS396231US | ABILITY-BUSINESS - Ability Business | 256 | 1 | 2 |
| AS402495US | BSH-ENT-01 - BSH | 256 | 256 | 2 |
| AS399149US | GOOD-SHEPHERD - Good Shepherd Medical Center | 256 | — | 1 |
| AS397413US | SAISD - San Antonio Independent School District | 256 | — | 1 |
| AS22802US | AMERISURE - Amerisure Mutual Insurance Company | 256 | — | 1 |
| AS62924US | COBNET-ASN-1 - City of Bryan, Texas | 256 | — | 1 |
| AS402555US | RIKKIA-NETWORK-01 - Rikkia | 256 | 1 | 2 |
| AS397675US | ASD-WHP-BLOCK - Armstrong School District | 256 | — | 1 |
| AS397568US | CLEARCORRECT - ClearCorrect | 256 | 2 | 3 |
| AS398339US | PRIME-NET-15-CA - PrimeNet, Inc | 256 | — | 1 |
| AS399872US | CULLMAN-REGIONAL-MEDICAL-CENTER - Cullman Regional | 256 | — | 1 |
| AS63135US | TABOR-COLLEGE-01 - Tabor College, Inc. | 256 | — | 1 |
| AS395960US | BUCK-INSTITUTE - Buck Institute for Research on Aging | 256 | — | 1 |
| AS13590US | MDMH - Marcus Daly Memorial Hospital Corporation | 256 | — | 1 |
| AS40743US | CJPIA-ASN1 - California Joint Powers Insurance Authority | 256 | — | 1 |
| AS402239US | TECHLOQ-US-02 - Techloq Limited | 256 | 256 | 2 |
| AS40856US | SBL-ASN - Sarah Bush Lincoln Health Center | 256 | — | 1 |
| AS393459US | DOMOINC772 - Domo, Inc. | 256 | — | 1 |
| AS46242US | SAFEWAYINS1 - Safeway Insurance Group | 256 | — | 1 |
| AS26988US | ADAGE-TECH - Adage Technologies, Inc | 256 | 2 | 3 |
| AS397773US | ENSCO-INC - ENSCO, Inc. | 256 | — | 1 |
| AS27515US | WORKD-LAB - Workday, Inc. | 256 | — | 1 |
| AS36602US | WESTWOODONE - Dial Global | 256 | — | 1 |
| AS393965US | ENDLAYER - EndLayer, LLC | 256 | — | 1 |
| AS397910US | TSC - AEG | 256 | — | 1 |
| AS399881US | WIFICARIBE - WiFi Services Caribbean, Inc. | 256 | 65.5K | 2 |
| AS23439US | KQED-ORG - KQED Inc. | 256 | — | 1 |
| AS397898US | PTGSERVICES - Power to Grow Services LLC | 256 | — | 1 |
| AS22620US | BOARDPENSIONS-PRESBYTERIAN - The Board of Pensions of the Presbyterian Church (USA) | 256 | — | 1 |
| AS63046US | BRAVE - Brave Software, Inc. | 256 | — | 1 |
| AS32124US | CONTINENTALMILLS-EXT - CONTINENTAL MILLS | 256 | — | 1 |
| AS5641US | TVH-289 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS62945US | CORNERSTONE - Cornerstone Information Systems, Inc. | 256 | — | 1 |
| AS394966US | DFCU - Direct Federal Credit Union | 256 | — | 1 |
| AS32207US | MIDDLESEX-HOSPITAL - MIDDLESEX HEALTH SYSTEM, INC. | 256 | — | 1 |
| AS400203US | BYF-MH-01 - Big Y | 256 | — | 1 |
| AS398226US | HENNIGES-AUTOMOTIVE-NETWORK - Henniges Automotive Holdings, Inc. | 256 | — | 1 |
| AS397702US | SSSS - 1776 Solutions, LLC | 256 | 65.5K | 3 |
| AS399890US | AVX - AVX Networks | 256 | — | 1 |