Safari Extension like ShowIP For reasons that are unimportant, I really need an extension just like the ShowIP extension for firefox but for Safari. Tried google and the safari extensions gallery but got nowhere.

On top of this, I need a version for mobile safari, but I'm not sure if that is even in the art of the possible.
It's not an extension but the Quix bookmark has a handy host command that works with any browser - even mobile safari.