They are now Fandom. https://dc.fandom.com
I have been putting in links for my submissions. I'm so not going back through and changing the wikia link to fandom.
Marvel too. https://marvel.fandom.com
How will the change impact my community?
The only visible differences you will notice is the new URL and the fact that, whether logged in or logged out, the domain will have HTTPS support. The existing wikia.com domains will all redirect to fandom.com, so any bookmarks or links across the web will continue to work as they do now.
Beyond that, there will be an initial traffic decrease as Google ingests and adapts to the change. Luckily, in our initial migration of 3,200 communities in October 2018, we found that on average the new fandom.com domains ultimately performed better than the wikia.com domains and overall traffic increased. These results are illustrated this chart showing data from pre- and post-migration.