A credit card number is found on the back of the card next to the security code number. It is the number that comes before the three-digit security code number on Visa, MasterCard, Discover, JCB and Diners Club cards. For the American Express card, the main card number is located on the front of the card with the four-digit security number above it.Continue Reading
The first few digits of a card number define the type of card. In a standard 16-digit credit card, the issuer of the card determines the first 15 digits. The last digit, also called the check digit, is computed mathematically on the basis of the other digits. The check digit is worked out to correct input errors when credit card numbers are being supplied manually. The protection makes it difficult for hackers or other persons to generate random card numbers accurately.
It is inadvisable to provide credit card numbers to individuals or parties over the telephone unless the card holder initiated the call. Even when calling legitimate merchants or issuers, it is not wise to give card numbers over cordless phones because these are exposed to eavesdropping. Cordless phone eavesdroppers may use overheard information to trick a card holder into a scam.Learn more about Credit & Lending
A CVV number on a credit or debit card is a three or four-digit number printed on the back of the card used to verify that the user has physical possession of the card when making purchases, according to CVV Number. These numbers are also called card security codes.Full Answer >
Options for activating a Visa credit card include calling the number on the sticker attached to the card, activating it online or activating it through an automated teller machine, according to CreditCards.com. Banks require activation to prevent fraud. However, some card issuers allow the cardholder to make a few small purchases before they activate the card.Full Answer >
A credit card number is normally 16-digits long, although the actual length varies depending on the card company. The maximum length of any card is 19 digits, and companies follow a specific identification protocol for number length.Full Answer >
Activate a PREMIER credit card by calling the toll-free number displayed on the card once it arrives in the mail, explains First PREMIER Bank. As of 2015, this is the only method for activating the card.Full Answer >