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: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-307 A Morristown TN KNVLTN02DMD  5514 WINDSTREAM NORLIGHT, INC. - TN 474      
423-307 0 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2006-07-03   
423-307 1 Morristown TN   145J TERRA NOVA TELECOM INC. 474   2024-02-10   
423-307 2 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2006-11-18   
423-307 3 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-01-07   
423-307 4 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-03-08   
423-307 5 Morristown TN KNVLTN02DMD  5514 WINDSTREAM NORLIGHT, INC. - TN 474   2008-03-08   
423-307 6 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-12-06   
423-307 7 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2008-09-15   
423-307 8 Morristown TN KNVLTN02DMD  5514 WINDSTREAM NORLIGHT, INC. - TN 474   2007-03-05   
423-307 9 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2008-08-09   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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