[Paymill] The test bank cards

Without 3-D Secure

Brand Number
Visa 4111111111111111
MasterCard 5500000000000004
American Express 340000000000009
JCB 3530111333300000
Maestro UK 6759000000000000
Carte Bleue 4973010000000004
Diners Club 30000000000004
Discover 6011111111111117

With 3-D Secure

Brand Number
Visa 4012888888881881
MasterCard 5169147129584558

https://developers.paymill.com/guides/reference/testing#1-which-credit-card-information-should-you-use-for-testing-