Credit Card Verifier allows you instantly check all major credit cards number for validity without submitting the card number online. Credit Card Verifier can validate any VISA, MasterCard, Diners Club, Carte Blanche, EnRoute, American Express (AMEX), Discover, or JCB credit card number. Credit Card validator uses LUHN10 (MOD-10) algorithm, so it only validates the integrity of the number combination, not the credit card itself. Credit Card Verifier detects and displays credit card type early depending on the first digits of the card number. Credit Card Verifier only verifies whether or not a credit card checksum is valid; it does not validate the credit card account. In order to verify a credit card account, you will need software that can access credit card networks, and, typically, submit authorization request on the card account. If you need to charge credit cards and validate credit card accounts, please look into a merchant provider such as Authorize.net FEATURES Verifies credit card numbers LUHN10 (MOD10) checksum algorithm First digits verification Automatically determines type of the card Easy-to-use cut, copy, paste functions Validates any Visa, MasterCard, AMEX, Discover, Diners Club, more