// You can go for an external service like
// https://www.geolocation-db.com
// They provide a geolocation service based on IP addresses
// where you don't need user permission.
JSON: https://geolocation-db.com/json/
JSONP: https://geolocation-db.com/jsonp/
// No restrictions, unlimited requests are allowed.
// But the location responses where no were near to exact location.