Bank Card Information Lookup

The bank card number is the number issued by each bank, which is a transaction number issued by the People's Bank of China between commercial banks. The transaction number between commercial banks has a unified regulation, and the transaction number of each line is different. The card number of the bank card has three formats: 19 digits, 17 digits and 16 digits. The card number of the credit card is uniformly 16 digits. The card number of the debit card of the China Merchants Bank、China Construction Bank is 16 digits, the card number of the debit card of the Bank of Communications is 17 digits, and the card number of the other banks is 19 digits. The first 6 digits of the card number represent the identification code of the issuing bank, also known as the BIN number. Different BIN numbers represent different bank card organizations and card levels.

BIN number is the identification code of the bank card issuing institution, and the first 6 digits of the bank card number are the BIN number. Through the BIN number, we can know the issuing bank of the bank card.
The middle part of the bank card is the issuing institution's custom position.
The last digit of the bank card number is the check code, which is calculated according to a special formula.