272 Comments Feedback forces me to clarify this: These are NOT valid credit card numbers.Are you 100% sure on this or is there a chance, however slight, that the numbers above combined with a lucky guess at the expiry date would authorise?
Just wondering if you have picked numbers from a range than is not used by the cc companies and thus guaranteed to be invalid or if you’re just assuming that the chances of a random credit card number and a random expiry date matching up are as slim as to be virtually nil.
I’m doing something similar (generating a load of cc Luhn numbers) to test an ecommerce site and don’t want to accidentally have somebody billed.
Yes, credit card payments can be scheduled, but the user must pay special attention to the expiration date on the card to make sure the card won't expire before all payments are made.
An expired card will result in a failed payment on the scheduled date, which may cause a late installment payment fee to be charged.
A very good article about the credit card number format can be found here: Anatomy of Credit Card Numbers As you can see below I get a lot of feedback about this page.