1. Customer service telephone inquiry:

The cardholder actively calls the credit card customer service telephone of the issuing bank, and then connects to the manual service according to the prompts, and then applies to the customer service staff for inquiring the card number, and can inquire with the reserved mobile phone number and ID number.

2. Enquiry at the counter of outlets:

Cardholders can also take their ID cards to the outlets of issuing banks, explain to the staff that they want to inquire about the card numbers, and then they can check all the bank card numbers under the name of the ID card.

3. official website inquiry:

Cardholders can log in to the issuing bank official website, find the credit card column, and click on the personal account to see the credit card number and other information.