Country.is is a free, open source app that helps you look up the location of an IP address. It uses GeoLite2 data created by MaxMind.
Usage
The interface is minimal.
The root route queries the IP of your browsing app.
GET https://api.country.is/ HTTP/1.1
Or specify an IP explicitly.
GET https://api.country.is/4.4.4.4 HTTP/1.1
Deployment
Run a private instance with
docker run -d -p 3000:3000 hakanensari/country