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: 936

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-936 A Sunbright TN KNVLTNMAYHX  318J COMCAST IP PHONE, LLC 474   2024-07-05   
423-936 1 Sunbright TN KNVLTNMAYHX  318J COMCAST IP PHONE, LLC 474   2024-07-05   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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