I went to it and it said the wiki was closed. Here is a wiki I found that isn't closed: http://voltz.wikia.com/wiki/Voltz_Wiki
It isn't complete but seems legit. Unless the name "thevoltz.wikia.com" opens up, I hope it becomes the official one.
Edit: I just realized that there is already an official one, it just isn't on wikia: http://voltzwiki.com/wiki/Voltz_Wiki However the wikia one is prettier.