IPData.co
Maxmind GeoIP2 Precision Service
IPInfo.io
IP2Location.com
IP-API.com
IPGeolocation.io
IPGeolocation.com
ipapi.co
ipstack.com
db-ip.com
ipify.org
ipgeolocationapi.com
How ipdata uses AWS to serve a global, highly-scalable IP geolocation API | AWS Startups Blog
