ipinfo.io - Simple IP address information.

GroupThinq - Cloud-based software application for consulting firms (and students) with all the tools required in...

BigDataCloud IP Geolocation API - Next Generation IP GeolocationAPI

Avenue right - Avenue right is a media buying and digital advertising platform that helps businesses make better decisions with the right advertising.

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.

Quantcast - Quantcast Corporation is a digital marketing company that provides free audience demographics measurement and delivers real-time advertising.