<Li> The second code, and the most cited, is CVV2 or CVC2 . This code is often sought by merchants for card not present transactions occurring by mail, fax, telephone or Internet . In some countries in Western Europe, card issuers require a merchant to obtain the code when the cardholder is not present in person . </Li> <Li> Contactless cards and chip cards may supply their own electronically generated codes, such as iCVV or a dynamic CVV . </Li> <P> The card security code is typically the last three or four digits printed, not embossed like the card number, on the signature strip on the back of the card . On American Express cards, the card security code is the four digits printed (not embossed) on the front towards the right . The card security code is not encoded on the magnetic stripe but is printed flat . </P> <Ul> <Li> American Express cards have a four - digit code printed on the front side of the card above the number . </Li> <Li> Diners Club, Discover, JCB, MasterCard, and Visa credit and debit cards have a three - digit card security code . The code is the final group of numbers printed on the back signature panel of the card . </Li> <Li> New North American MasterCard and Visa cards feature the code in a separate panel to the right of the signature strip . This has been done to prevent overwriting of the numbers by signing the card . </Li> </Ul>

What is the csc number for american express