Bank cards can record customer information and capital flow information, and commercial banks have unified regulations on business number segments. 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.
It is understood that once the bank card is designated, the basic information, amount and transaction status of the customer will be transmitted to the central bank in time. Because a lot of money laundering prevention, statistics and other information are summarized in the central bank database, which is convenient for unified financial management.
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Bank card related information
There are two main types of bank cards for numbering:
1, debit card
Usually also called a bank savings card, you can deposit and withdraw money and transfer money, but you can't overdraw. The debit card number is generally 19 digits, such as 19 digits for ICBC and Agricultural Bank, 16 digits for China Merchants Bank and China Construction Bank, and 17 digits for Bank of Communications.
2. Credit card
Usually also called credit card, you can overdraw a certain amount for consumption. The serial number of the credit card is 16.
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