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The real challenge is getting a valid credit card number which passes the test so that's what we focused on.
Feel free to use the online credit card number generator as many times as you wish.
The maximum length of the account number is 12 digits. The last digit is the checksum which we explained how to calculate using the MOD 10 algorithm.
It is used to validate the primary account number to protect against accidental errors.
It identifies the industry where the card will be most used in.
If this digit is 9 the next three digits are the country code from ISO 3166-1.
For more complete testing data you can make up an expiration dates, a card holder name and possibly an address with a zip code.
When we say they are valid, we merely imply that they are a possible combination of characters which will validate when passed through the MOD 10 algorithm.
I advise you not not to try to use these for any actual transactions, only for testing purposes!
In order to complete a purchase a combination of data must be had, and merely a card number is not enough.
An contains a six-digit issuer identification number (IIN), an individual account identification number, and a single digit checksum.
The first digit of the issuer identification number is the major industry identifier (MII).