Board Thread:Support Requests - Getting Technical/@comment-28979925-20160710192453/@comment-1757994-20160710211202

Assuming you mean you want to create a domain name and direct it at your wiki here, CNAME record, assuming your DNS registrar allows you to specify one. It's also possible Wikia can do that for you, but I suspect they'd prefer to keep everything "wikia.com" for branding. You can ask.