there are ways to check the credit card number: 1. check online. Cardholders can log in to bank credit card online banking with their ID number and make inquiries through online credit card business. 2. Bank customer service inquiry. Dial the customer service phone of the card bank and enter the ID number according to the prompt, then you can query the card number information. 3. bank counter inquiry

individuals go to the bank counter outlets, provide personal ID cards, card processing time and other related information, and hand them over to the staff to help retrieve the card number.

the card number of a credit card follows international standards, ranging from 13 digits to 19 digits. However, most of our commonly used credit cards are 16-digit, while American Express's credit cards are 15-digit and Dinka's is 14-digit.

in addition, it should be noted that the card numbers of debit cards and credit cards in a bank are generally different. For example, in 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.