how many digits were sent in the email, and how many were stored in the admin?

Given that you have the customer's phone number separately, and you can match up the CC info between order and email, how did it break up the digits?
Normally it should be grabbing 4 + 8 + 4, with the middle 8 in the email, and the outer 4/4 in the order. Any idea what it did for alternate digits?