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Area code 456

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Area code 456 was a non-geographic numbering plan area code (NPA) used until 2017 to route inbound calls from outside the territories of the North American Numbering Plan to specific carriers for carrier-specific services.[1]

In November 2017, NPA 456 was withdrawn because of lack of demand. The code is scheduled to be returned to the pool of unassigned NPAs in 2023.

See also

References

  1. ^ "Assignment of NPA code "456" for International Carrier Identification" (PDF). Bellcore/North American Numbering Plan Administration. 1993-08-02. Retrieved 2008-08-28.

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