What are some alternatives?
When comparing IP-API.com and ipdata.co, you can also consider the following products
ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database
ipinfo.io - Simple IP address information.
IP2Location - IP2Location is a leading provider of IP intelligence service.
Ipregistry - Ipregistry is a fast, reliable IP geolocation and threat data API. People use Ipregistry to personalize content, analyze traffic, target ads, block countries but also to prevent abuse by detecting Proxy and Tor users, known spammers and bad bots.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Geo IP Tool - Find a geolocation of an IP address including latitude, longitude, city, region and country.