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