The IIN ranges used by the major card schemes are:

• Visa: Card numbers start with a 4.
• MasterCard: Card numbers start with the numbers 51 through 55.
• Diners Club: Card numbers begin with 36 or 38.
• Discover: Card numbers begin with 6011 or 65.
• Japan Credit Bureau (JCB): Card numbers begin with 35.

What do the credit card numbers mean?

When combined with the first digit, the next 5 digits of a credit card number identify the card issuer for any given Visa. The subsequent 8 numbers are part of your account number. These numbers make the card unique to the cardholder. Finally, the last digit is a security measure.

What credit card starts with 4100?

It turns out that if the first digit is a “4” then the card is always a Visa card. The first mystery is solved! A “4100” credit card is always a Visa card!

What do the numbers mean on a credit card?

Numbers 2-6: Together with the first digit, these numbers represent the Issuer Identification Number (IIN), also called the Bank Identification Number (BIN). This clarifies which credit card company a card comes from, which isn’t always obvious.

What are the digits of an American Express credit card?

How Credit Cards Work. American Express – Digits three and four are type and currency, digits five through 11 are the account number, digits 12 through 14 are the card number within the account and digit 15 is a check digit. Visa – Digits two through six are the bank number, digits seven through 12 or seven through 15 are…

What are the first two digits of a credit card?

Each credit card has a unique string of numbers, but the first one or two digits can help you identify the payment network. A Discover card’s first digit is the number 6, Mastercard’s is 5, and American Express card numbers start with 3.

What does the last digit on a credit card mean?

The last digit is a “checksum,” which helps to ensure that a credit card number is valid. To apply the checksum, payment processors use a process known as the Luhn Algorithm.