But the server at 70.85.55.69 doesn't seem to respond to anything and isn't pingable.
Note their email goes to the same server, and it doesn't respond on Port 25 (mail) any more than it does on 80 (web), so no point sending email, it won't get through.
So at a guess, from here it looks like server failure (as opposed to something like someone not renewing the domain name). Beyond that, no idea, only someone with admin rights to the box at 70.85.55.69 would be able to give more info.