IPtoASN Database

Free IP to ASN & Country mapping database. Updated hourly.

Download IPv4, IPv6, and combined IP geolocation datasets in TSV format.

IPv4 to ASN

Format:
range_start range_end AS_number country_code AS_description

IPv4 to Country

Format:
range_start range_end country_code

IPv6 to ASN

Format:
range_start range_end AS_number country_code AS_description

IPv6 to Country

Format:
range_start range_end country_code

Combined IPv4+IPv6 to ASN ALL-IN-ONE

Format:
range_start range_end AS_number country_code AS_description

Public API Discontinued

The public API was phased out on December 31, 2020 due to increasing traffic.

You can still download the databases above and run your own API server for production use.

This ensures better performance and no rate limits for your applications.