A credit card verification (CCV) number is a special number located on a credit card that helps companies like Elance verify that the credit card is being used by the actual owner of the card.
We do not record the credit card verification number anywhere in our database, and we only ask for it the first time you enter your credit card or when updating your expiration date or billing address.
How do I find the credit card verification number on my credit card?
If you have an American Express credit card, you will find the four digit credit card verification number printed on the front of the card above the credit card number.
If you have MasterCard or Visa, you will find the three digit credit card verification number printed on the back of the card, usually on the signature line. It will be the last 3 digits on the signature line.