![]() The Three Major Credit Card Networks: A Brief HistoryĪ credit card is more than a rectangular slip of plastic and metal. How? It all goes back to when the credit card industry was struggling to get customers. Most importantly, the technology behind the number helps prevent fraud, minimizes payment issues and reduces errors. The order of the digits isn’t random but strategically organized, following an international standard.įrom that sequence, you can find out the issuing bank, your account number and more. That lengthy number on the front of your card is packed with crucial information. While not actually part of the account number itself, the check digit is essential to allow easy validation of card numbers and detection of typos, missed digits, etc.Have you ever wondered what all those numbers you can never quite memorize stamped across your credit card actually mean? We use our cards daily but most of us have little understanding of the history and objectives they represent. The last digit of the card number (the 16th digit in most cases) is the check digit, which is calculated by applying a mathematical formula called the Luhn algorithm to the preceding portions of the account number. These 8 digits are the most important part of the credit card number. In this case, the IIN of 467893 indicates that this card was issued by Public in Malaysia.ĭigits 7-15 of the credit card number contain the Primary Account Number, or PAN, issued by the bank to uniquely identify the account holder. This sequence uniquely identifies the bank that issued the card. ![]() The first six digits of the card number, inclusive of the MII, are called the IIN (Issuer Identification Number) or BIN (Bank Identification Number). In this case, the MII of 4 indicates that this is a Visa card. ![]() The first digit of the card is known as the MII digit, and indicates the credit card's scheme. ![]() While credit card number may seem like a random string of digits, they actually contain a large amount of valuable data about the card that can be used for validation and verification purposes. Anatomy of a Public Visa Credit Card Number ![]()
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