Spott - API to work with cities, countries and political divisions.
Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.
IP Location - IPLocation.io provides a free lookup tool to check the location of your Public IP Address. It finds this data through various GEO IP databases and online services. Just enter an IP and check its location easily.
OpenX - Ad technology platform available as a hosted service or as an open source download.
BigDataCloud IP Geolocation API - Next Generation IP GeolocationAPI
AdSense - Earn money with website monetization from Google AdSense. We'll optimize your ad sizes to give them more chance to be seen and clicked.