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  2. List of dialling codes in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/List_of_dialling_codes_in...

    Telephone dialling codes in the United Kingdom. This is a list of telephone dialling codes in the United Kingdom, which adopts an open telephone numbering plan for its public switched telephone network.

  3. List of British Railways shed codes - Wikipedia

    en.wikipedia.org/wiki/List_of_British_Railways...

    The coding system had its origins in a reorganisation of locomotive operation and maintenance on the LMS in the 1933-35 period. [1] It grouped all sheds into districts with a main shed, given the district number followed by the letter A as its code, and subsidiary sheds with the same number followed by B, C, or D etc.

  4. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    The Basic Status Codes have been in SMTP from the beginning, with RFC 821 in 1982, but were extended rather extensively, and haphazardly so that by 2003 RFC 3463 rather grumpily noted that: "SMTP suffers some scars from history, most notably the unfortunate damage to the reply code extension mechanism by uncontrolled use.

  5. Unit Identification Code - Wikipedia

    en.wikipedia.org/wiki/Unit_Identification_Code

    The Unit Identification Code (UIC) is a six character alphanumeric code that uniquely identifies each United States Department of Defense entity. The UIC is often used on various paperwork to assign a soldier to a specific company in which they fall under.

  6. Null modem - Wikipedia

    en.wikipedia.org/wiki/Null_modem

    A null modem adapter. Null modem is a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable.The name stems from the historical use of RS-232 cables to connect two teleprinter devices or two modems in order to communicate with one another; null modem communication refers to using a crossed-over RS-232 cable to connect the teleprinters ...

  7. Template:Area code list - Wikipedia

    en.wikipedia.org/wiki/Template:Area_code_list

    This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.

  8. List of Eircode routing areas in Ireland - Wikipedia

    en.wikipedia.org/wiki/List_of_Eircode_routing...

    A map of Ireland's routing key areas. The list of Eircode routing key areas in Ireland is a tabulation of the routing key areas used by An Post and other mail delivery services for the purposes of directing mail within Ireland.

  9. List of ZIP Code prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_ZIP_Code_prefixes

    Each cell in this table contains a three-digit ZIP code prefix, the state where that ZIP code prefix is located, and the name of the United States Postal Service (USPS) Sectional Center Facility (SCF) that serves that ZIP code prefix, which may be in a different state.