The starting numbers of bank cards of major banks are as follows:

1. China Construction Bank: 4367 or 6227;

2. Agricultural Bank of China: 6228 or 9559;

3. Industrial and Commercial Bank of China: 6222 or 9558;

4. Bank of China: 6216, 4563, 6013;

5. Postal Bank: 6221 or 6210;

6. Bank of Communications: 6014 or 5218;

7. China Everbright Bank: 6282 or 3568;

8. Minsheng Bank: 6226 or 4218;

9. Industrial Bank: 6229 or 4864;

10. Ping An Bank: 6029 or 9988.

At present, debit cards of major banks and most commercial banks have 19 digits, and credit cards have 16 digits, but some are different, such as China Merchants Bank, Hua Xia Bank, and CITIC Bank debit cards have 16 digits. , Industrial Bank debit card 18 digits.

The first 6 digits of the bank card are the issuing bank identification number (BIN), which is the identification number of a certain card given by the credit card organization to the issuing bank. The information this number can provide includes which credit card organization the card belongs to. , which bank issued this card, and what type of card it is.

Cards issued by "China UnionPay" must start with 62, and people who use Visa credit cards in China will have their card numbers start with 4. People who use Mastercard (Matercard) generally have card numbers that start with 51, 52, 53, 54 , starting with 55.

The meaning of each digit of the bank card number:

The first six digits are: Issuer Identification Number (IIN).

Note: The previous Bank Identification Number (BIN) has been replaced with IIN.

The first digit is the Major Industry Identifier (Major Industry Identifier ( MII)).

●The middle digits are: personal account identification (starting from the seventh digit of the card number)

The middle digits are customized by the card issuing bank and generally consist of 6-12 digits. Up to 12 digits can be used.

Each bank has different rules for identifying personal accounts. Some banks will include code information such as branches, sub-branches, and savings outlets in this part of the content. Some banks may not be so detailed and will use natural running sequence codes.

●The last digit is the check digit

Use the Luhn algorithm to calculate the last digit of the credit card or debit card by using the digits in front of the card number.

Bank is a financial institution established in accordance with the law to engage in currency and credit business. It is the product of the development of commodity currency economy to a certain stage.

Banks are one of the financial institutions. Banks are divided by type: central bank, policy bank, commercial bank, investment bank, and World Bank. Their responsibilities are different.

Central Bank: The People's Bank of China is the central bank of our country.

State-owned policy banks: including the Export-Import Bank of China, Agricultural Development Bank of China, and China Development Bank.

State-owned commercial banks: including Industrial and Commercial Bank of China, Agricultural Bank of China, Bank of China, China Construction Bank, Postal Savings Bank of China, Bank of Communications, etc.

Investment banks: including Goldman Sachs Group, Morgan Stanley, Citigroup, Wells Fargo, UBS, Societe Generale, etc.

World Bank: Used to finance countries' efforts to overcome poverty. Each institution plays a unique role in its mission of alleviating poverty and improving living standards.