From my experience with our card processor (not stripe): 1) They have AVS checks, which can check the street number and zip code. But its up to us to decide w

From my experience with our card processor (not stripe): 1) They have AVS checks, which can check the street number and zip code. But its up to us to decide what to do with this information (e.g. void the transaction). 2) They do not check anything else (country, name, state, phone, email, etc). 3) Some cards will fail if you put in the wrong expiration date, some won't - I would guess this is up to the card being charged. I get no information back when its incorrect but they let the charge go through. 4) Some cards will fail if you put in the wrong cvv code. Some will succeed but will just let you know through another field that the cvv code doesn't match - its up to us to decide what to do (e.g. void the transaction).