IPShowX

It shows current Diablo 2 Battle.net game's IP's last octet

IPShowX is a free Cocoa-based utility for Mac OS X. It shows current Diablo 2 Battle.net game's IP's last octet (the one that matters).

Especially useful for hot-IP-hunting.The program its free to use.
Requirements
PPC / Intel, Mac OS X 10.2 or later