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  2. Postal codes in Canada - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Canada

    A Canadian postal code (French: code postal) is a six-character string that forms part of a postal address in Canada. [1] Like British, Irish and Dutch postcodes, Canada's postal codes are alphanumeric. They are in the format A1A 1A1, where A is a letter and 1 is a digit, with a space

  3. HMAC-based one-time password - Wikipedia

    en.wikipedia.org/wiki/HMAC-based_one-time_password

    6-digit codes are commonly provided by proprietary hardware tokens from a number of vendors informing the default value of d. Truncation extracts 31 bits or log 10 ⁡ ( 2 31 ) ≈ 9.3 {\textstyle \log _{10}(2^{31})\approx 9.3} decimal digits, meaning that d can be at most 10, with the 10th digit adding less variation, taking values of 0, 1 ...

  4. Chinese telegraph code - Wikipedia

    en.wikipedia.org/wiki/Chinese_telegraph_code

    The Chinese telegraph code, Chinese telegraphic code, or Chinese commercial code (simplified Chinese: 中文电码; traditional Chinese: 中文電碼; pinyin: Zhōngwén diànmǎ or simplified Chinese: 中文电报码; traditional Chinese: 中文電報碼; pinyin: Zhōngwén diànbàomǎ) [1] is a four-digit decimal code (character encoding) for electrically telegraphing messages written with ...

  5. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    American Express usually uses the four-digit code on the front of the card, referred to as the card identification code (CID), but also has a three-digit code on the back of the card, referred to as the card security code (CSC). American Express also sometimes refers to a "unique card code". [2] "CVD" or "card verification data": Discover

  6. National drug code - Wikipedia

    en.wikipedia.org/wiki/National_Drug_Code

    These rules include the 11 digit format. Unless stated otherwise, search for drug codes using the 10 digit format. If a labeler code is either 5 or 6 digits in length, it may be combined with: A product code consisting of 4 digits and a package code consisting of 1 digit for a total NDC length of 10 or 11 digits (5-4-1 or 6-4-1), or

  7. Postal codes in Argentina - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Argentina

    Postal codes in Argentina are called códigos postales.Argentina first implemented a four-digit postal code system in 1958, aiming to improve mail distribution efficiency. However, it wasn't until 1998 that the more detailed and comprehensive Código Postal Argentino (CPA) system was launched, significantly enhancing both accuracy and efficiency in mail delivery.

  8. Web colors - Wikipedia

    en.wikipedia.org/wiki/Web_colors

    A hex triplet is a six-digit (or eight-digit), three-byte (or four-byte) hexadecimal number used in HTML, CSS, SVG, and other computing applications to represent colors.The bytes represent the red, green, and blue components of the color.

  9. VAT identification number - Wikipedia

    en.wikipedia.org/wiki/VAT_identification_number

    The full identifier starts with an ISO 3166-1 alpha-2 (2 letters) country code (except for Greece, which uses the ISO 639-1 language code EL for the Greek language, instead of its ISO 3166-1 alpha-2 country code GR, and Northern Ireland, which uses the code XI when trading with the EU) and then has between 2 and 13 characters. The identifiers ...