The card security code is a unique 3 or 4 digit number, separate from your credit card number. Your security code can be found in the following locations on the following cards:
Visa / MasterCard / Discover / JCB:
Your card security code is a 3-digit number
on the back of your credit card, immediately
following your main card number.
Last digit of account number panel
Look for the 4-digit code printed on the front
of your card just above and to the right
of your main credit card number.
This 4-digit code is your Card Security Code.
4 digit card verification number