UnionPay number is a line of numbers printed on the surface of bank cards, which consists of 16 to 19 digits. Usually called bank card number or credit card number.
Bank card number refers to the number code on the hard card issued by each bank, and the business number segment between commercial banks has unified regulations. The first six digits of the card number represent the identification code of the issuing bank, also called BIN number, and different BIN numbers represent different bank card organizations and card levels.