Credit card numbers that conform to the Luhn formula (MOD 10 check).
Usefull for testing e-commerce sites (because they should get past any pre-validation you do, and be declined at the card processor or bank stage).
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Cards that are not facially valid send back a standard CARD_DENY [reason code] message so you can test negative-path too. Put in any CCC you wish, and give the purchaser any name you want.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.Thanks to everyone who stops by to write a note, it is appreciated.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.
Most credit card acceptance agencies also provide a “test” site that does everything but actually bill someone.