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12 Jan

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.The issuer identification number also known as the bank identification number (BIN) is the first six digits of the credit card number.

The MOD 10 algorithm is a checksum (detection of errors) formula which is the common name for the Luhn algorithm.

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.

To be completely clear and spell this out, these fake credit card numbers should not be used to try and purchase stuff.

They merely respect guidelines of a valid credit card number.