Credit Card Account Number Verification - Card Type Identification

This section provides information about identifying a credit card type from a card number's numeric range and number of digits.

American Express

Valid length: 15 digits. First digit must be a 3 and second digit must be a 4 or 7.

Diners Club and Carte Blanche

Valid length: 14 digits.
First digit must be 3 and second digit must be 0, 6, 8 or 9. The ranges are:
  • 300000 through 305999
  • 309500 through 309599
  • 360000 through 369999
  • 380000 through 399999

Discover

Valid length: 16 digits.
First six digits must be in one of the following ranges:
  • 601100 through 601109
  • 601120 through 601149
  • 601174
  • 601177 through 601179
  • 601186 through 601199
  • 644000 through 659999

enRoute

Valid length: 15 digits. First four digits must be 2014 or 2149.

JCB

Valid length: 16 to 19 digits.
First four digits must be in the range 3528 through 3589.

Mastercard

Valid length: 16 digits.
First digit must be 5 and second digit must be in the range 1 through 5 inclusive. The range is 510000 through 559999.
First digit must be 2 and second digit must be in the range 2 through 7 inclusive. The range is 222100 through 272099.

Maestro

Valid length: Up to 19 digits.
First digit must be 5 or 6. The ranges are:
  • 50nnnn
  • 56nnnn through 64nnnn
  • 66nnnn through 69nnnn
The range 60nnnn to 64nnnn is also used by Discover (see above).

Visa

Valid length: Up to 19 digits. First digit must be a 4.Information on how to identify the credit card type based on the numeric range and based on the length of the credit card number.