An introduction & features

Have you ever wondered what the information on your credit card actually means? A quick read of anatomy of a credit card shows me the possibility of presenting an easy to use tool to decode the hidden secrets of your credit card code, with no risk and no pain.

  • Easy-to-understand reports show if your number is valid with a Luhn check
  • Learn where a card was issued
  • Find the account number on your credit card
  • Works with Mastercard, Visa, AMEX, Discover, and more
  • Also includes support for dining, club and air cards

How to use & examples

Simply type your credit card number into the form above, and hit enter. You can enter the number in either AAAABBBBCCCCDDDD or AAAA-BBBB-CCCC-DDDD format!

Here are some examples of valid credit card numbers and completely invalid numbers. Verisign kindly provides the following test numbers:

Master CardVisaAmerican Express (AMEX)
Master CardVisaAmerican Express
Master CardVisaAmerican Express
VisaAmex Corporate
Diner's ClubDiscoverJCB
Diner's ClubDiscoverJCB
Diner's ClubDiscoverJCB