CVV2 is a security measure we require for all transactions. Since a CVV2 number is listed on your credit card, but is not stored anywhere, the only way to know the correct CVV2 number for your credit card is to physically have possession of the card itself.
Visa, MasterCard & Discover
Visa, MasterCard & Discover cards show the CVV2 in the signature area on the back of the card. (it is the last 3 digits AFTER the credit card number).
American Express cards show the 4 digit CVV2 printed above and to the right of the imprinted card number on the front of the card.