A credit card preamble—sometimes called a credit card prefix, issuer identification number (IIN), or bank identification number (BIN)—is a digit or series of digits at the beginning of a credit card number that identifies the type of card or company that issued the card.
The Start and End preambles must end with an asterisk (*) (for example, 304*).
The number of digits in the Start and End fields must be the same.
The number of digits in the Start and End fields cannot exceed the Length defined.
The value of the End field must be greater than the value of the Start field.
Related Topics
Parent topic: Payments and Currency