The first six digits correspond to the issuer identification number (also known as the bank identification number (BIN)) and identify the institution of the credit card issued. Healthcare, telecommunications and other future industry assignmentsįor assignment by national standards bodies Petroleum and other future industry assignments The numbers complies to the ISO 7812 numbering standard.Ī valid credit card number constitutes of six-digit issuer identification number (IIN), single digit checksum, an individual account identification number.Īccording to Major Industry Identifier, the different digits belong to different category, which you can refer below: MII DigitĪirlines, financial and other future industry assignments What constitutes a valid credit card number?Ī valid credit card number has several fields and each of them has a different meaning and purpose.
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