Usually, you need to register your home address and company address when applying for a credit card. Generally, these two addresses will be used as mailing addresses. It should be easy to remember. If you really can't remember, just call the bank's customer service hotline to check. Moreover, when the card is sent, the bank will issue the card information. For example, I use CCB credit card, and the mailing code will be prompted in the message, which can be inquired through the logistics company. If you find that the registered mailing address can't be found, you can call the customer service hotline to modify the address, and the bank can help you resend the letter after it is returned.