Clone of this site "http://www.ip-adress.com/"
With every possible information about the entering ip (computer info, goggle map with location, local time and so on.)
Config file where you can set wich info should be showed.
Locale file to input different languages.
Automatic language selection depending on entering ip.
Admin area instead of config files is also an alternative.
possibility to select another ip to check, this should be using some kind of "human" detection some numbers/symbols to enter/click or suggestion.
Will run on apache linux server (with mysql if needed).