The first 16 digits of the bank card number represent the meaning: the first four digits are the bank name code, the last four digits are the card use code, the middle 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.

China Construction Bank, formerly known as People's Construction Bank of China, was established in June 1954+ 10/(later renamed as China Construction Bank on March 26th, 1 996). The head office is located at No.25, Financial Street, Beijing. It is a large state-owned bank managed by the central government and a national deputy ministerial unit. The main business areas of China Construction Bank include corporate banking, personal banking and treasury business, with branches and subsidiaries in 29 countries and regions, and subsidiaries in many industries such as funds, leasing, trust, life insurance, property insurance, investment banking, futures and pension.

1. If it is a CCB account with 19, the third place from the seventh place to the ninth place represents a secondary branch, that is, a regional city. The number 10 to the number 12 indicates the account opening outlets. 16-digit account number, and the 7th-9th digits indicate secondary branches.

Second, the standard UnionPay savings card starts with 6227, IC card starts with 62 17, VISA financial card starts with 4340, MasterCard financial cards start with 5522 and 5240, and wealth card or private bank card starts with 62 10.

1, 62 1700, which is the China Construction Bank Longka cartoon debit card.

2. The beginning of 436742 is China Construction Bank VISA Longka Debit Card.

3. VISA Longka Credit Card of China Construction Bank, beginning with 436745.

At the beginning of 4.622280, China Construction Bank Alipay Dragon Card Debit Card.

Third, bank cards are divided into three types: debit card, quasi-credit card and credit card, while bank cards are generally marked with UnionPay, Visa, Master and JCB.

4. Generally, the card at the beginning of 6 is UnionPay card, the card at the beginning of 4 is a card with Visa logo, the card at the beginning of 5 is a card with Master, and the card at the beginning of 3 is a card with JCB logo.

Five, a bank card with the same logo, the first few are the same, such as China Merchants Bank, the card with UnionPay logo starts with 62258, the card with Visa logo starts with 4392, the card with Master logo starts with 5 186, and the card with JCB logo starts with 3568.

Six, another bank's debit card and credit card number are generally different, such as China Construction Bank, the debit card starts with 4367, which is 19 digits, while the credit card with Visa logo also starts with 4367, but it is 16 digits.

The card number of a general credit card is 16 digits, and the card number of a debit card varies from 16 digits to 19 digits according to different banks.