Area code 456

Area code 456 is a telephone area code in the North American Numbering Plan that has been withdrawn from use and is available for a new assignment.

The area code was in use as non-geographic area code from 1993 until 2017 to route inbound calls from outside the territories of the North American Numbering Plan to specific carriers for carrier-specific services.[1][2]

In November 2017, the area code 456 was withdrawn because of lack of demand.[2][3] It was returned to the pool of unassigned codes in 2023 and is available for future assignment as a geographic NPA.

See also

References

  1. ^ "Assignment of NPA code "456" for International Carrier Identification" (PDF). Bellcore/North American Numbering Plan Administration. 1993-08-02. Retrieved 2023-10-10.
  2. ^ a b "Sunset of the Inbound International NPA (INT/NPA/NXX) Assignment Guidelines" (PDF). NANPA. 2017-11-27. Retrieved 2023-10-10.
  3. ^ "NANPA : Numbering Resources - 456-NXX Codes". www.nationalnanpa.com. Retrieved 2023-04-25.


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