I've just created an IP address related workflow that shows your IP address, geolocation, hostname and network provider name, all of which it gets from the http://ipinfo.io API. Without any arguments it provides you information about your own public IP:
You can also provide an IP address argument to get details about that:
You can download this workflow from https://www.dropbox.com/s/eozqq3vqi2akpyg/ipinfo.alfredworkflow