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