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  2. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  3. Roblox - Wikipedia

    en.wikipedia.org/wiki/Roblox

    Roblox occasionally hosts real-life and virtual events. They have in the past hosted events such as BloxCon, which was a convention for ordinary players on the platform. [36] Roblox operates annual Easter egg hunts [43] and also hosts an annual event called the "Bloxy Awards", an awards ceremony that also functions as a fundraiser. The 2020 ...

  4. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.

  5. Main distribution frame - Wikipedia

    en.wikipedia.org/wiki/Main_distribution_frame

    The MDF is a termination point within the local telephone exchange where exchange equipment and terminations of local loops are connected by jumper wires at the MDF. All cable copper pairs supplying services through user telephone lines are terminated at the MDF and distributed through the MDF to equipment within the local exchange e.g. repeaters and DSLAM.

  6. List of international call prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_international_call...

    This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, only the symbol + before the country code may be used [citation needed] irrespective of where the telephone is used at that moment; the ...

  7. David Baszucki - Wikipedia

    en.wikipedia.org/wiki/David_Baszucki

    David Brent Baszucki[1] (/ bəˈzuːki /; born January 20, 1963), also known by his Roblox username david.baszucki, formerly builderman, is a Canadian-born American entrepreneur, engineer, and software developer. He is best known as the co-founder and CEO of Roblox Corporation. He previously co-founded and served as the CEO of Knowledge ...

  8. Public switched telephone network - Wikipedia

    en.wikipedia.org/wiki/Public_switched_telephone...

    The public switched telephone network (PSTN) is the aggregate of the world's telephone networks that are operated by national, regional, or local telephony operators. It provides infrastructure and services for public telephony. The PSTN consists of telephone lines, fiber-optic cables, microwave transmission links, cellular networks ...

  9. Area code 242 - Wikipedia

    en.wikipedia.org/wiki/Area_code_242

    Area code 242 is the telephone area code in the North American Numbering Plan (NANP) for The Bahamas. Area code 242 translates to the letter sequence BHA on an alpha-numeric keypad. The numbering plan area (NPA) was created in a split of area code 809 , which was originally assigned to the Bahamas and many of the Caribbean islands.