China Construction Bank card number starts with:

621700?China Construction Bank

436742 China Construction Bank VISA Dragon Debit Card?

436745 China China Construction Bank VISA Dragon Card Debit Card

622280 China Construction Bank Alipay Dragon Card Debit Card

Example: 4367?2222 3333 4444 555

Same as the previous card number, before The 4 digits are the name code of the bank, the next four digits are the purpose code of the card, the next four digits are the activation time of the card, the last four digits are the branch location code, and the last three digits are the user's Personal code.

Extended information

In fact, our bank card numbers are generally 16 or 19 digits. It consists of the following three parts.

1. The first six digits are: Issuer Identification Code IssuerIdentificationNumber (IIN).

According to ISO standards, the length of bank cards is generally 13-19 digits, and there are also 12 digits internationally. UnionPay standard cards are generally 16-19 digits long, and dual-organization cards also have 13-19 digits.

Note: The previous card issuing bank identification code BankIdentificationNumber (BIN) has been replaced with IIN.

The first digit is the major industry identifier (MajorIndustryIdentifier (MII)), below The table lists the card number industries represented by each number of MII.

The following table lists the issuing institutions corresponding to different card numbers. Therefore, the card number issued by "China UnionPay" must start with 62; the card number of people who use Visa credit card in China will start with 4, and the card number of people who use Mastercard (Matercard) generally starts with 51, 52, 53, 54, 55.

2. 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.

3. 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.

Reference materials

China Construction Bank-official website

China Construction Bank-Baidu Encyclopedia

Dragon Debit Card-China Construction Bank official website

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Dragon Card Credit Card-CCB Official Website

CCB Bank Card-CCB Official Website