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  2. Fictitious telephone number - Wikipedia

    en.wikipedia.org/wiki/Fictitious_telephone_number

    In North America, the area served by the North American Numbering Plan (NANP) system of area codes, fictitious telephone numbers are usually of the form (XXX) 555-xxxx. The use of 555 numbers in fiction, however, led a desire to assign some of them in the real world, and some of them are no longer suitable for use in fiction.

  3. Can you hear me? (alleged telephone scam) - Wikipedia

    en.wikipedia.org/wiki/Can_you_hear_me?_(alleged...

    On March 27, 2017, the FCC issued an official warning about the telephone scam. They defined it as, "Scammers open by asking a yes-or-no question, such as: "Can you hear me?" or "Is this X?" Their goal is to record you saying "yes" in response. They can then use that recording to authorize charges over the phone."

  4. Telephone numbers in South Korea - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_South...

    Call 051-212-3456 within Busan: 212-3456. Call 051-212-3456 from elsewhere: 051-212-3456. Call 02-312-3456 from abroad: +82-2-312-3456. South Korea uses an open dialing plan with a total length (including 0) of 9 to 11 digits and, within city, subscriber numbers 7 to 8 digits long. Dialing from mobile phones to any type of phone except 010 ...

  5. Telephone prefix - Wikipedia

    en.wikipedia.org/wiki/Telephone_prefix

    Telephone prefix. A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the ...

  6. Telephone number verification - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_verification

    A JavaScript function can check to see if a phone number is a valid format, i.e., is numeric, starts with a valid set of numbers ("0" for local, or an international dialing prefix followed by a valid country code and is not too short to be a phone number. At first a JavaScript function is used to clear out any spacer characters.

  7. Hardware random number generator - Wikipedia

    en.wikipedia.org/wiki/Hardware_random_number...

    A USB-pluggable hardware true random number generator. In computing, a hardware random number generator (HRNG), true random number generator (TRNG), non-deterministic random bit generator (NRBG), or physical random number generator is a device that generates random numbers from a physical process capable of producing entropy (in other words, the device always has access to a physical entropy ...

  8. 555 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/555_(telephone_number)

    555 (telephone number) The telephone number prefix 555 is a central office code in the North American Numbering Plan, used as the leading part of a group of 10,000 telephone numbers, 555-XXXX, in each numbering plan area (NPA) (area code). It has traditionally been used only for the provision of directory assistance, when dialing NPA-555-1212.

  9. Telephone numbers in Thailand - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Thailand

    A number 2134567 in Bangkok: 02-2134567; A number 213456 in Nakhon Ratchasima: 044-213456; Thailand switched to a closed dialing plan in 2021, which means that calling within the area code requires the area code to be dialed. E.g., When calling a number 2134567 in Bangkok (02) from a fixed-line phone:

  10. Telephone numbers in the Netherlands - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    Geographical telephone numbers. Since the reorganization of the telephone system in 1995, Dutch geographical numbers consist of 9 digits. The numbering plan implements a system of area codes. An area code consists of two or three digits. The larger cities and areas have two digits with a subscriber number of seven digits, permitting more local ...

  11. Telephone number - Wikipedia

    en.wikipedia.org/wiki/Telephone_number

    It did exist in other cities, resulting in customers' having that number receiving random calls from people asking for God. While some played along with the gag, others found the calls aggravating. The number in the Glenn Miller Orchestra's hit song "Pennsylvania 6-5000" (1940) is the number of the Hotel Pennsylvania in New York City. The ...