900-number meaning

Name given to telephone numbers in North America for which an extra charge is assessed, part of which is returned to the owner of the number.
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Origin of 900-number

  • In the original North American Numbering Plan, phone numbers beginning with an area code of "800" were reserved for so called toll-free numbers, where the party receiving the call pays the charges. The telephone companies later developed a corresponding set of numbers beginning with the area code "900" which would permit the owner of the number to receive additional fees from the caller.

    From Wiktionary