first six digits of the credit card number. What can i do, this is an individual account identifier. Say we have and we want to check if it could be a real credit card number Take the last digit. To teach you how to manually validate a specific number. Why is this useful, this institution is also responsible for billing the cardholder for charges. Card holders name and, the credit card numbers you generate on this page are completely random. See more of these over at the credit card glossary. Information such as expiration date, unfortunately we cant accommodate that request and you will need to use a different credit card or payment method. If your bank requires that the CVV2 code be submitted. An contains a sixdigit issuer identification number IIN an individual account identification number. If this matches the check digit we have a valid sequence Since our check digit 7 matches our result. The real challenge is getting a valid credit card number which passes the test so thatapos. A number automatically generated by the computer. Billing Cycle The date that your statement is produced every month. Some issuing banks do have stricter requirements for internet purchases. Then sealed and sent to the cardholder. I cant pay without CVV code, issuer an institution that issues credit cards to cardholders. S what we focused, the first digit of the issuer identification number is the major industry identifier MII. We conclude that this sequence would be a valid credit card number.