Credit Card Number Validator Version 1 descriptions Credit Card Number Validator is a free utility to help you check validity of a credit or debit card number. Credit Card Number Validator verifies credit or debit card numbers right on your PC without going on-line or transmitting sensitive information from your PC. Credit Card Number Validator uses LUHN formula for validation of primary account number. Credit Card Number Validator can only validates the integrity of the number combination not the credit or debit card itself. Credit Card Number Validator detects & displays credit or debit card type early depending on the first digits of the card number. It only verifies whether or not a credit or debit card checksum is valid it does not validate the credit or debit card account. In order to verify a credit or debit card account you will need software that can access credit & debit card networks and typically submit authorization request on the card account. FEATURES - Validates credit or debit card numbers - LUHN10 checksum algorithm - First digits verification - Automatically determines type of the credit card - Validates any Visa MasterCard AMEX Discover or Diners Club credit card numbers