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  2. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    The first six or eight digits of a card number (including the initial MII digit) are known as the issuer identification number (IIN). These identify the card issuing institution that issued the card to the card holder. The rest of the number is allocated by the card issuer. The card number's length is its number of digits. Many card issuers ...

  3. MAC address - Wikipedia

    en.wikipedia.org/wiki/MAC_address

    The Individual Address Block (IAB) is an inactive registry which has been replaced by the MA-S (MAC address block, small), previously named OUI-36, and has no overlaps in addresses with the IAB [6] registry product as of January 1, 2014. The IAB uses an OUI from the MA-L (MAC address block, large) registry, previously called the OUI registry.

  4. What do the numbers on your credit card mean? - AOL

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

    The numbers on a credit card help identify the credit card network, the company that issued the card and the cardholder. ... First credit card digit: Card network or Industry identifier.

  5. Organizationally unique identifier - Wikipedia

    en.wikipedia.org/wiki/Organizationally_unique...

    However, since IEEE 802.3 (Ethernet) and IEEE 802.4 send the bytes (octets) over the wire, left-to-right, with least significant bit in each byte first, while IEEE 802.5 and IEEE 802.6 send the bytes over the wire with the most significant bit first, confusion may arise when an OUI in the latter scenario is represented with bits reversed from ...

  6. American Express users: Beware this scam - AOL

    www.aol.com/article/finance/2016/09/20/american...

    After providing login information to the phony American Express page -- and regardless of whether the login information is correct -- users are presented with real- looking pages for them to enter ...

  7. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    The card security code is located on the back of Mastercard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip On American Express cards, the card security code is a printed, not embossed, group of four digits on the front towards the right

  8. How to check and change your billing address - AOL

    www.aol.com/finance/check-change-billing-address...

    An accurate credit card billing address helps ensure important card-related mail, such as your monthly credit card statement, is sent to the right place. Keeping your billing address updated also ...

  9. ISO/IEC 7813 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7813

    PAN : Payment card number 4400664987366029, up to 19 digits; FS : Field separator "^" NM : Name, 2 to 26 characters (including separators, where appropriate, between surname, first name etc.) FS : Field separator "^" ED : Expiration data, 4 digits or "^" SC : Service code, 3 digits or "^" DD : Discretionary data, balance of characters