3 ms·

This is kind of similar to Gumroad's Overlay: https://gumroad.com/overlay https://gumroad.com/overlay

• mstefanko 14y ago
  It is, and oddly enough they both use "4242 4242 4242 4242" as the test card number.
  • asselinpaul 14y ago
    there isn't many test numbers if I can remember correctly. 4111-1111-1111-1111 is another.
    • kapilkale 14y ago
      Oddly enough Stripe won't accept that as a test number.
      • sheena 14y ago
        Here's the full list of cards we let you use for testing, including some that trigger specific responses: https://stripe.com/docs/testing#cards https://stripe.com/docs/testing#cards
  • aaronblohowiak 14y ago
    Many (most?) CC processors use that number, as it is easy to remember and passes the Luhn checksum.
  • someone13 14y ago
    I believe the reason for this is that it's one of the simplest card numbers that passes the Luhn check: http://en.wikipedia.org/wiki/Luhn_algorithm http://en.wikipedia.org/wiki/Luhn_algorithm
  • johncoogan 14y ago
    Pretty sure it's because Gumroad uses Stripe. Heard that from a rival CEO though... So don't quote me.