We check this website, now 51dcf.com is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is 51dcf Down Right Now? - NO! 51dcf is up!
If you have problem with access to site 51dcf, and domain 51dcf.com is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).