Visa, MasterCard, Discover, JCB, and Diners Club The security code is a three-digit number on the back of your credit card, immediately following your main card number.
American Express The security code is a four-digit number located on the front of your credit card, to the right above your main credit card number.
If your security code is missing or illegible, call the bank or credit card establishment referenced on your card for assistance.
If you are not sure if you can use a particular credit card for your purchase, visit the appropriate support page:
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