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Credit Card Number

The credit card numbers have a particular sum of internal system and are utilized according to a shared numbering scheme. Credit card numbers are particular instances of ISO 7812 numbers.

About Credit Card Number

The credit card numbers are particular forms of ISO 7812 numbers. An ISO 7812 number comprises 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, as well as an account number. The major industry identifier number or MII is regarded as a constituent of the issuer identifier number.

Prefixes of Credit Card Number

The prefix of a credit card number is the serial arrangement of figures at the commencement of the number that ascertains the credit card network under which the number falls. The initial six digits of the credit card number are termed as the Bank Identification Number or BIN. These help recognize the company, which is the issuer of 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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