Hi, I've been trying out your tool and it works really well but it's quite slow. I've done several tests with different IPs and it takes aproximately 11 seconds to give me a response (using firebug's network). Although if I look again an IP it seems cached and is answered really quick, good job.
Thanks for the feedback. Geolocation information for new IP address that is not already in our database comes from third-party API. We have enabled asynchronous call to the API to speed up the lookup. The current response time for a new lookup should range between 0.6 to 1.2 secs.