Thread:IncarnateParanoia/@comment-25098626-20140714013830/@comment-24133975-20140714230542

It is possible to be sure via IP check. Even though he may use a different IP every time, there should be similarities in the IPs that show whether or not he's on the same network. I'm not very familiar with the similarities factor, though, which is why you should consult Staff lest you're banning an innocent user.

Ultimately, it's up to the admins on that wiki whether or not he will be un-banned.