geoPlugin IP Geolocation XML SDK provides indirect access to geoplugin.com. It is a website for the geoplugin.net API that allows users to lookup the location of an IP address or perform currency conversion. The web service provides free usage of its geolocation API and automatically supports IPv4/IPv6 queries. The API allows users to supply an IP address or latlon values, or if there is no input, the requesting IP address will be used. IP geolocation data returned includes country, region/state, city, zip code, latitude, longitude and more. Reverse geocoding can be performed by providing IP or lat/lon values to find nearby places, transport hubs etc in the "extras" category.