IP2Location

IP2Location.com helps to determine the user's geographical location information via IP address. It translates IP to an ISO3166 country code, region or state, city, latitude and longitude, ZIP/Postal code, time zone, Internet Service Provider (ISP) or company name, domain name, net speed, area code, weather station code, weather station name, mobile country code (MCC), mobile network code (MNC) and carrier brand, elevation, and usage type.

It works for all IP addresses including IPv4 and IPv6. 

Learn more at  https://www.ip2location.com