A website I visit relatively often is down.
I learn from another website by the same person that the server was hacked, and that he is working furiously to get everything working again.
What (other than asking - he doesn't seem all that responsive at the best of times, and he's busy right now) is the easiest way to find out if he's running his own server, or if he is hosted by some commercial outfit that might be hosting hundreds or thousands of sites on the same server?