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