Area code 456 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Area code 456" in English language version.

refsWebsite

Global rank English rank

2,470^th place

1,321^st place

nationalnanpa.com (Global: 2,470^th place; English: 1,321^st place)

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