Obviously, as someone has already figured out, the server is actually down.
I had the same problem, you can just try to get in, or to wait and be patient.
I'm really unhappy, that ogopogo has deleted his signature because otherwise, we would be able to cheack out if the servers is online or not.
I think, that far more than 800 players are now online is just something like a bug, it shows you something, but indeed, it isn't true.