Credit Card Number Generator & Validator

Validate a credit card number

Credit Card Number: Validate

Fake credit card numbers for all major brands

These credit card numbers DO NOT work! They are for testing purposes only. Without a valid owner name, an expiration date and a valid CVV code, they can't be used for real transactions. You should use these numbers only to test your validation strategies and for bogus data. Note that the algorithm used here is freely available across the web even Wikipedia.org. These numbers were generated randomly.You can refresh the page to get new numbers.

  • VISA:


  • MasterCard:


  • American Express (AMEX):


  • Discover:


  • JCB:


  • Diners Club - North America:


  • Diners Club - Carte Blanche:


  • Diners Club - International:


  • Maestro:


  • LASER:


  • Visa Electron:


  • InstaPayment:


How to validate a Credit Card Number?

Most credit card number can be validated using the Luhn algorithm, which is more or a less a glorified Modulo 10 formula!

The Luhn Formula:

  • Drop the last digit from the number. The last digit is what we want to check against
  • Reverse the numbers
  • Multiply the digits in odd positions (1, 3, 5, etc.) by 2 and subtract 9 to all any result higher than 9
  • Add all the numbers together
  • The check digit (the last number of the card) is the amount that you would need to add to get a multiple of 10 (Modulo 10)

Luhn Example:

Step Total
Original Number: 4 5 5 6 7 3 7 5 8 6 8 9 9 8 5 5
Drop the last digit: 4 5 5 6 7 3 7 5 8 6 8 9 9 8 5
Reverse the digits: 5 8 9 9 8 6 8 5 7 3 7 6 5 5 4
Multiple odd digits by 2: 10 8 18 9 16 6 16 5 14 3 14 6 10 5 8
Subtract 9 to numbers over 9: 1 8 9 9 7 6 7 5 5 3 5 6 1 5 8
Add all numbers: 1 8 9 9 7 6 7 5 5 3 5 6 1 5 8 85
Mod 10: 85 modulo 10 = 5 (last digit of card)

List of credit card number formats

Credit Card Issuer Starts With ( IIN Range ) Length ( Number of digits )
American Express 34, 37 15
Diners Club - Carte Blanche 300, 301, 302, 303, 304, 305 14
Diners Club - International 36 14
Diners Club - USA & Canada 54 16
Discover 6011, 622126 to 622925, 644, 645, 646, 647, 648, 649, 65 16
InstaPayment 637, 638, 639 16
JCB 3528 to 3589 16
Laser 6304, 6706, 6771, 6709 16-19
Maestro 5018, 5020, 5038, 5893, 6304, 6759, 6761, 6762, 6763 16-19
MasterCard 51, 52, 53, 54, 55 16-19
Visa 4 13-16
Visa Electron 4026, 417500, 4508, 4844, 4913, 4917 16