Board Thread:Support Requests - Community Management/@comment-26569706-20180615164655/@comment-1038387-20180615171237

They won't comply with that.

While you can request a user check, that's only to see if multiple accounts are linked through common IPs or email addresses, and only if they're recurring vandals. However, even then they won't divulge the IP addresses behind it. Wikia is bound to privacy laws.