Card ID: Diners Club; Mastercard and Visa

Instructions: Turn over your credit card and look for the number printed on the signature panel. You are required to enter the last 3 digits.

Card ID: American Express

Instructions: Look for the number printed above your Amex card number. You are required to enter these 4 digits.

American Express cards show the Credit Card ID printed above and to the right of the imprinted card number on the front of the card.