credit card number also known as Primary Account Number PAN has several fields and each of them has a meaning. The last digit is the checksum which we explained how to calculate using the MOD 10 algorithm. To teach you how to manually validate a specific number. The available credit line is restored for use again. We conclude that this sequence would be a valid credit card number. Knowing the Major Industry Identifier MII and the Issuer Identification Number IIN we can prefix a credit card number and then randomly select the rest. However, feel free to use the online credit card number generator as many times as you wish. It identifies the industry where the card will be most used. Issuer an institution that issues credit cards to cardholders. They merely respect guidelines of a valid credit card number. A number automatically generated by the computer. This number complies to the isoiec 7812 numbering standard. What constitutes a Valid Credit Card Number. Ve ever found yourself trying to try a product online which required a credit card. For the technically inclined, as the outstanding balance is paid. Lets do an example, you know why we made this. These identify the institution that issued the credit card to the card holder.