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Credit Card Number
About Credit Card Number
The credit card numbers are specifc forms of ISO 7812 numbers.An ISO 7812 number contains several parts, including:
- An issuer identifier number or IIN (six digit)
- A major industry identifier number or MII (single digit)
- A single digit verification number, which utilizes the Luhn Algorithm
- An account number
Prefixes of Credit Card Number
The prefix of a credit card number is the arrangement of characters at the beginning of the number that specifies the credit card network.The initial six digits of the credit card number are termed as the Bank Identification Number or BIN.
These help recognize the company that issued the card. The remainder of the number is distributed by the credit card issuer.
The length of the credit card number is the number of figures or digits.
The lengths and prefixes for the most popular forms of credit card are the following:
Type of Card | Length | Prefix (es) | Coverage chart Symbol | Validation |
American Express | 15 | 34, 37 | AmEx | Luhn Algorithm |
Diners Club Carte Blanche | 14 | 300 to 305 | DC-CB | Luhn Algorithm |
Diners Club International | 14 | 36 | DC-Int | Luhn Algorithm |
Diners Club Enroute | 15 | 2014, 2149 | DC-eR | No Validation |
Diners Club US & Canada | 16 | 55 | DC-UC | Luhn Algorithm |
Maestro (Debit Card) | 16, 18 | 5020, 5038, 6304, 6759 | Maes | Luhn Algorithm |
Discover Card | 16 | 6011, 65 | Disc | Luhn Algorithm |
MasterCard | 16 | 51 to 55 | MC | Luhn Algorithm |
Visa Electron | 16 | 417500, 4917, 4913, 4508, 4844 | Visa | Luhn Algorithm |
Visa | 13, 16 | 4 | Visa | Luhn Algorithm |
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