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  • 14-Day Low Price Guarantee
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FREE Shipping on Orders Over $175
FREE Shipping on
Orders Over $175
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14-Day Low Price Guarantee
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CVV2—Card Verification Value 2
What is CVV2?
For Visa, Discover and MasterCard the CVV2/CVC2 is a three-digit security code that is printed on the back of cards. The number appears in reverse italic at the top of the signature panel at the end. For American Express cards, the CID is a four digit number on the front of the card. This program helps validate that a genuine card is being used during a transaction. All MasterCard cards, both credit and debit, were required to contain CVC2 by January 1, 1997; all Visa cards must contain CVV2 by January 1, 2001.



What does CVV2, CVC2 & CID stand for?
CVV2: “Card Verification Value 2”
CVC2: “Card Validation Code 2”
CID: “Card Identification Number”.

How does it work?
Card-not-present merchants are being directed to ask cardholders for CVV2/CVC2 when cardholders place orders. Merchants ask the cardholder to read this code from the card. The merchant then asks for CVV2/CVC2 verification during the authorization process. The issuer (or processor) validates the CVV2/CVC2 and relays the decline/approve results during the authorization process. Merchants, by using the CVV2/CVC2 results along with the Address Verification Service (AVS) and authorization responses, can then make more informed decisions about whether to accept transactions.
Reef Aquarium
Reef Aquarium
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Testimonials
Sept 12, 2014
"Great store with all the right supplies for the Reefer."
TCshore

Sept 12, 2014
"Very satisfied with all my purchases from Marine Depot. The ease of ordering to the prompt and quick delivery of merchandise, I am very pleased. Thank You!"
Phil

Sept 12, 2014
"Great site...I order most of my reef supplies from here. And they always have everything in stock."
Smitty

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