Question

I have a very simple JS check and i am looking for a list of dummy cc numbers which i can exclude.
Just for mastercard AmEx and Visa

var dummyCCArr = new Array();
dummyCCArr=["5105105105105100","4111111111111111", "4012888888881881", "378282246310005","5454545454545454","5431111111111111",]; 

if(jQuery.inArray(cardNo, dummyCCArr)!=-1){
        ccErrorNo = 5;
        return false;
    }

Any links?

Answer 1

Different credit card companies use different checksums to do an initial validation of the card (make sure it’s a valid format for that brand of card).

You can find info here on the different checksums used

EDIT: To clarify, I would perhaps validate using this kind of approach, it can’t prove the fact that it is a valid credit card, just a valid format.