This was confirmed by Bluehost support team through a tweet (@bluehost). "Found an issue in our data center at 11:37AM. Team responded immediately with a fix and any servers affected are starting to come up now."
Attempts to login to cPanel is not possible. Logging in with Bluehost cPanel is also a problematic behavior. So, if you're currently having 1, 10, 20, or even a hundred websites served at Bluehost servers, then all you have to do now is patiently wait for the restoring of service. I trusted this hosting company and still satisfied.
As far as I can remember, Bluehost was also down sometime in August 2013. Since then I haven't heard anymore of any server downtime for a long time.
Bluehost appealed to the customers to be patient. They claimed that they are working hard to solve the problem as soon as possible.
@GovernAmerica Restoring service is our top priority. Thanks for your patience. We are working hard to to solve this asap.— Bluehost (@bluehost) November 20, 2013