A credit card postal code is an additional form of security used to verify it is being used by the owner of the card or an authorized user. It is connected to the five digit zip code for the billing address of the cardholder.15 abr 2021
Do you need the last 4 digits of a ZIP code?
The ZIP+4 code is used and assigned by the United States Postal Service (USPS) for routing purposes. The final 4 digits are not required for delivery of your mail and may change frequently. ... Five-digit ZIP codes also change, but they do so infrequently.