Maxmind's GeoLite2 Free Databases
This product includes GeoLite2 data created by MaxMind, available from http://www.maxmind.com.
npm install geolite2.mmdbconst geolite2 = require('geolite2.mmdb');
const maxmind = require('maxmind');
const lookup = maxmind.openSync(geolite2.city); // or geolite2.country or geolite2.asn or geolite2.paths.city or geolite2.paths.country or geolite2.paths.asn
const city = lookup.get('66.6.44.4');