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  2. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    The last digit is the Luhn check digit. IINs and PANs have a certain level of internal structure and share a common numbering scheme set by ISO/IEC 7812. The parts of the number are as follows: a six or eight-digit Issuer Identification Number (IIN), [a] the first digit of which is the major industry identifier (MII)

  3. ISO 8583 - Wikipedia

    en.wikipedia.org/wiki/ISO_8583

    Acquiring institution (country code) 20: n 3: PAN extended (country code) 21: n 3: Forwarding institution (country code) 22: n 3: Point of service entry mode 23: n 3: Application PAN sequence number 24: n 3: Function code (ISO 8583:1993), or network international identifier (NII) 25: n 2: Point of service condition code 26: n 2: Point of ...

  4. Police code - Wikipedia

    en.wikipedia.org/wiki/Police_code

    A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or other status ...

  5. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...

  6. S10 (UPU standard) - Wikipedia

    en.wikipedia.org/wiki/S10_(UPU_standard)

    The identifiers consist of a two-letter service indicator code, an eight-digit serial number (in the range 00000000 to 99999999), a single check-digit, and a two-letter ISO country code identifying the issuing postal administration's country.

  7. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    If you use a 3rd-party email app to access your AOL Mail account, you may need a special code to give that app permission to access your AOL account. Learn how to create and delete app passwords. Account Management · Apr 17, 2024

  8. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  9. ISO/IEC 7812 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7812

    When using an eight digit IIN, the maximum total length of the primary account number (PAN) remains at 19 digits. The PAN comprises the IIN, the individual account identifier, and the check digit, so when using an eight digit IIN, the maximum length of an individual account identifier would only be 10 digits.