Board Thread:General Discussion/@comment-4738647-20140421191003/@comment-1330470-20140421192427

Because relatively speaking there are very few, and they probably want to reserve them for very important purposes. I'm sure you can make a wonderful wiki for M3, but in all likelihood, DC Wiki, a Very Large Wiki with many thousands of articles, is going to be more prominent in any case, and their short URL more justified.

Still, it might be possible to found a wiki at m3-anime.wikia.com, and then have the wiki moved via Special:Contact - I'd give it a shot.