Can't you use something like https://www.getcreditcardinfo.com/generatevisacreditcard.php https://www.getcreditcardinfo.com/generatevisacreditcard.php or do t

Can't you use something like https://www.getcreditcardinfo.com/generatevisacreditcard.php https://www.getcreditcardinfo.com/generatevisacreditcard.php or do they actually check it on all websites?