Can one find the Cardholder Account Number of a Mastercard when they have the first 6 and last 3 digits?

June 14th, 2008 | by admin |
PolarBearCult asked:


Can one find, by use of logarithms or other, the Cardholder Account Number of a Mastercard when they have the Issuer Identification numbers (the first 6) and the last three check digits?
e.g.
(5 1 2 3 4 5) 6 7 8 9 0 1 2 (3 4 5)
If one had the numbers in the brackets, could they find the rest?

Herman
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    1. One Response to “Can one find the Cardholder Account Number of a Mastercard when they have the first 6 and last 3 digits?”

    2. By nhikhe on Jun 17, 2008 | Reply

      Yes, you can find the rest of the numbers, and you will find many different combinations also.

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