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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. Automatic number announcement circuit - Wikipedia

    en.wikipedia.org/wiki/Automatic_number...

    An automatic number announcement circuit ( ANAC) is a component of a central office of a telephone company that provides a service to installation and service technicians to determine the telephone number of a telephone line.

  4. Ringback number - Wikipedia

    en.wikipedia.org/wiki/Ringback_number

    Every telephone company determines its own ringback numbers for each individual central office. Under the North American Numbering Plan, most North American area codes reserve telephone numbers beginning with 958 and 959 for internal testing. Some companies also reserve 999 for test exchanges.

  5. New COVID Testing Site Open In Malvern | Malvern, PA Patch

    patch.com/pennsylvania/malvern/new-covid-testing...

    New COVID Testing Site Open In Malvern - Malvern, PA - At this new testing location, you can get a COVID-19 PCR test, an Antigen Test, and Rapid Molecular PCR tests. See details here.

  6. Appointments Available At Test Now And Go COVID-19 Testing ...

    patch.com/pennsylvania/malvern/appointments...

    The Test Now and Go drive-thru site is conveniently located at Uptown Worthington in Malvern (close to the Wegmans, Target and Verizon). You can access Uptown Worthington directly from northbound...

  7. 555 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/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).

  8. North American Numbering Plan - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering_Plan

    The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably Mexico, do not participate with the NANP.

  9. COVID-19 testing in the United States - Wikipedia

    en.wikipedia.org/wiki/COVID-19_testing_in_the...

    Free at-home COVID-19 test from U.S. Federal government. By August, the overall ratio of positive to total tests was close to seven percent—well above the five percent the WHO considers to be the threshold for containment.

  10. Telephone number verification - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_verification

    Telephone number verification (or validation) services are online services used to establish whether a given telephone number is in service. They may include a form of Turing test to further determine if a human answers or answering equipment such as a modem, fax, voice mMail or answering machine .

  11. Loop around - Wikipedia

    en.wikipedia.org/wiki/Loop_around

    A loop line or loop around is a telephone company test circuit. The circuit has two associated phone numbers. When one side of the loop is called (side A), the caller receives a test tone of approximately 1000 Hz (milliwatt test). When the second number (side B) is called, it produces dead silence, but the party on side A hears the milliwatt ...