What is a credit card number? Read it and understand the meaning of the card number in one second The credit card number can be said to be the most obvious feature of a credit card. It is also the one that we often talk about but are most likely to ignore. In fact, a credit card number is not a randomly generated string of numbers, but a complex containing multiple messages. So let’s explain to you in detail what a credit card number is. The credit card number is a series of numbers printed on the front of the credit card. The card number is generally 16 digits. The current 16-digit credit card number is stipulated by international standards. Generally speaking, the first 6 digits of the card number are BIN, which is assigned by the international card organization. The first digit of the credit card number is 4, which is a VISA card, and 5 represents Master. If it is 622126~622925, it means this is a UnionPay standard card. Credit card numbers starting with 6 are China UnionPay single currency cards (or American Discover), credit card numbers starting with 4 are international brand VISA credit cards (the world's number one credit card organization), 5 are international brands MASTERCARD, and 3 are Japan JCB and American AMERICAN EXPRESS. The 7th to 15th digits are assigned to each row according to their own needs according to their regional affiliation, and the 16th digit is the check digit. Other non-16-digit card numbers are formulated and assigned by each bank. For example, a cardholder's newly applied credit card was successfully approved, starting with 489592. Then we can accurately determine the credit card this cardholder applied for based on what a credit card number is and the rules for determining credit card numbers. It is a VISA platinum credit card. From this we can easily see that the question of what is a credit card number is not as simple as we think. The amount of information contained in a credit card number is very huge. Therefore, we would also like to remind everyone that everyone should always pay attention to the process of swiping credit cards and not leaking card number information to others to avoid criminals taking advantage of it. Click on the credit card application channel, and the authoritative third-party certification agency will apply for the credit card, which is safe, reliable and reassuring.