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: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-621 A Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474      
423-621 0 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2016-10-29   
423-621 1 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2017-01-07   
423-621 2 Morristown TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2019-05-11   
423-621 3 Morristown TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2019-05-11   
423-621 4 Morristown TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2018-03-14   
423-621 5 Morristown TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2019-05-24   
423-621 6 Morristown TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2019-06-16   
423-621 7 Morristown TN KNVLTNMA88Z  5562 METROPCS, INC. 474   2021-05-07   
423-621 8 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2018-08-23   
423-621 9 Morristown TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2018-08-23   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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