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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-801 A Cumberland Gap TN HRGTTNAG0MD  6278 UNITED STATES CELLULAR CORP. - TENNESSEE 466      
423-801 0 Cumberland Gap TN   6278 UNITED STATES CELLULAR CORP. - TENNESSEE 466   2008-02-09   
423-801 3 Cumberland Gap TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 466   2010-07-06   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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