Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 909

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-909 A South Pittsburg TN CHTGTNNSXMZ  624H ONVOY SPECTRUM, LLC 472      
423-909 0 South Pittsburg TN CHTGTNNSXMZ  624H ONVOY SPECTRUM, LLC 472   2023-07-22   
423-909 1 South Pittsburg TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-09-18   
423-909 9 South Pittsburg TN   145J TERRA NOVA TELECOM INC. 472   2025-11-22   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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