From: Pritish Nandi <[email-masked]>
To: "Rahul Singh" <[email-masked]>
Date: Mon, 2 Nov 2015 00:02:03 +0530 (IST)

For Visa & MasterCard, the CVN is the last three-digit number that can be found on the back of your card in the signature field. For American Express (Euro only), the CVN is the four-digit number shown above the credit card number on the front of the card. 

R egards, 
Pritish Nandi