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  2. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    Payment card numbers are composed of 8 to 19 digits, [1] The leading six or eight digits are the issuer identification number (IIN) sometimes referred to as the bank identification number (BIN). [2] : 33 [3] The remaining numbers, except the last digit, are the individual account identification number. The last digit is the Luhn check digit.

  3. Postal address verification - Wikipedia

    en.wikipedia.org/wiki/Postal_address_verification

    If an apartment number is not specified, the default address (lobby) is used for delivery. If the address is valid, it is assigned a ZIP+4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range. An address with a ZIP+4 code (or nine-digit ZIP code) is considered to ...

  4. Address verification service - Wikipedia

    en.wikipedia.org/wiki/Address_verification_service

    An address verification service ( AVS) is a service provided by major credit card processors to enable merchants to authenticate ownership of a credit or debit card used by a customer. [1] AVS is done as part of the merchant's request for authorization in a non-face-to-face credit card transaction. The credit card company or issuing bank ...

  5. What Is a Billing Zip Code? How To Find Yours for Your Credit ...

    www.aol.com/billing-zip-code-yours-credit...

    123 Example Street. Beverly Hills, California 90210. Your billing zip code, or credit card postal code, is the five-digit number on the bottom right, which in this sample is 90210. This would be ...

  6. Credit card information: The basics you need to know - AOL

    www.aol.com/finance/credit-card-information...

    Printed on a credit card, you'll find the card number, the cardholder’s name, when the card expires and the card's security code — all the details you need to make purchases online or in ...

  7. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in U.S. Patent No. 2,950,048, granted on August 23, 1960.

  8. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    A card security code ( CSC; also known as CVC, CVV, or several other names) is a series of numbers that, in addition to the bank card number, is printed (not embossed) on a credit or debit card. The CSC is used as a security feature for card not present transactions, where a personal identification number (PIN) cannot be manually entered by the ...

  9. What Do Credit Card Numbers Mean? - AOL

    www.aol.com/news/credit-card-numbers-mean...

    A credit card number is the set of digits printed on either the front or back of a physical credit card. Credit card numbers are often 16 digits, but they can be as long as 19 digits or as short ...