Does not work on my system: In the column where the ip should appear, there it says only "access denied".
IPvFox instead works perfectly and does exactly the same.

My system is a windows 10 Home with heavily restricted user rights and a whitelisting firewall (instead of the default blacklisting). Maybe some of those security measures hinder IPvFoo while do no harm to IPvFox. It would be interesting to learn what exactly is it that IPvFoo wants to do violating those security measures.