ATM they have doac as a sub domain http://doacentral.tkplayers.com/
You can read all the updates they've made on that page.
Manny doesn't sound too confident, and I haven't been able to get a hold of Morris (Dahlsim).
This doesn't fall under Morris' typical pattern. He always prefers preservation over making a clean sweep. He wouldn't kill the site until he was sure it was backed up somewhere and easily accessible. Many of the links in the sub domain link to the old forums and so are now broken as the information is gone at this moment.
My personal take is that the server provider suspended Morris' account for some data reason - possible they were upset with it constantly attacking itself with all the applications trying to share the same database over the past 10 years. Just a hypothesis but that's my gut instinct. I imagine the forums will be back up some time - just don't know when heh. For now, it's certainly a sign of the future when they do kill off DOAC and merge it with TKP.
Edit: Just got off the phone with Morris. He was unaware of the situation and will be working with his host to resolve the issue. So it's not closed yet as he still has to transfer stuff over to TKP.