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2. 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 US patent 2950048A, granted on 23 August 1960. [1]

3. 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 ...

4. 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.

5. What Do Credit Card Numbers Mean? - AOL

   www.aol.com/finance/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 ...

6. 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 (but 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 ...

7. List of major credit card issuers and networks - AOL

   www.aol.com/finance/list-major-credit-card...

   U.S. Bank Altitude® Reserve Visa Infinite® Card *. U.S. Bank Triple Cash Rewards Visa® Business Credit Card *. Advantages of this card issuer: U.S. Bank credit cards may not be as popular as ...