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: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-657 A Mosheim TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-657 0 Mosheim TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2015-03-28   
423-657 1 Mosheim TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2018-08-20   
423-657 2 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2018-06-09   
423-657 3 Mosheim TN JHCYTNXCXAY  073H TELNYX LLC 956   2021-01-23   
423-657 4 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-01-07   
423-657 5 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-07-10   
423-657 6 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-02-17   
423-657 7 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-02-17   
423-657 8 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-23   
423-657 9 Mosheim TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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