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: 714

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-714 A Morristown TN KNVLTNMAYAY  829J PAETEC ITEL, LLC 474   2024-12-07   
423-714 0 Morristown TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2016-08-21   
423-714 1 Morristown TN KNVLTNMAYAY  829J PAETEC ITEL, LLC 474      
423-714 2 Morristown TN KNVLTNMAYAY  829J PAETEC ITEL, LLC 474      
423-714 3 Morristown TN KNVLTNMAYAY  829J PAETEC ITEL, LLC 474      
423-714 4 Morristown TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2019-06-16   
423-714 5 Morristown TN KNVLTNMAYAY  829J PAETEC ITEL, LLC 474      
423-714 6 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2009-12-31   
423-714 7 Morristown TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2010-11-19   
423-714 8 Morristown TN KNVLTNMAYAY  829J PAETEC ITEL, LLC 474      
423-714 9 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2011-09-05   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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