The vast majority of MasterCard credit card numbers start with 5 and are 16-digit long, The credit card number must pass the Luhn Algorithm Check. Every MasterCard credit card has a specifically prefix like: 51, 52, 53, 54, 55. The prefix 2221-2720 is inactive now.
Credit Card Type | IIN ranges | Number (Demo not real) |
---|---|---|
Visa | 4 | 4916077506643876 |
Discover | 6011, 622126-622925, 644-649, 65 | 6011 7812 0430 2623 |
American Express | 34, 37 | 374313476701813 |
A Credit Card number must pass the Luhn Algorithm test to see if it is a valid credit card number.
The credit card number entered passed the Luhn Check so it is a valid credit card number!
The credit card number entered failed the Luhn Check. It's not valid?
Digits 7 to final number minus 1 indicate the individual account identifier (the last is the checksum).
The first six digits of a card number identify the institution that issued the card to the card holder.
The first digit of which is the Major Industry Identifier (MII), it indicates the individual account identifier.