No credit ever for sex

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).

Information about CVV2 / CVC / etc numbers can be found here: CVV numbers.

As you can see these would be very hard to calculate without the bank’s keys.

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.

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.

Before you ask no I haven't got anyone's credit card details.

Instead take a look at some of the amusing feedback I have received by e-mail.

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