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