Credit card issuers first assign the account numbers and then compute steps one through three of the Luhn algorithm to determine the appropriate check digit. In this case, the card number should have ...

Most of us are curious beings by nature. So, if you’ve been staying awake at night wondering what your credit card number means, it’s your lucky day. I’m going to pull back the curtain and show you ...

You’re at the checkout screen after an online shopping spree, ready to enter your credit card number. You type it in and instantly see a red error message ...

Liliana Hall was a writer for CNET Money covering banking, credit cards and mortgages. Previously, she wrote about personal credit for Bankrate and CreditCards.com. Some card details on this page may ...