ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
ipinfo.io - Simple IP address information.
ipapi - Web analytics with IP address lookup and location API
ipdata.co - Get the Geolocation, Organisation, Currency, Timezone, Calling Code, Flag, Proxy, Tor and Threat intelligence data from any IPv4 or IPv6 address.
ipwhois.io - ipwhois.io is an API that provides a users location (country, region, city, currency, currency symbol etc) based on their IP address. Get the accurate location information with our IP Lookup API and IP Location Database for any IP address.