minus-square@l_b_ilinkfedilinkEnglish16•edit-21 year agoRandom credit card facts: The first ~8 digits are related to the credit network and issuing bank. Visa cards all start with 4. The last digit is a checksum and it only is really useful to validate the rest of the digits were entered correctly.
Random credit card facts: The first ~8 digits are related to the credit network and issuing bank. Visa cards all start with 4. The last digit is a checksum and it only is really useful to validate the rest of the digits were entered correctly.