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: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-406 A Midway (Sullivan) TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956      
423-406 0 Midway (Sullivan) TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956   2008-05-17   
423-406 1 Midway (Sullivan) TN BUVLTNAX0MD  792K CHARTER IP ENABLED SERVICES, LLC 956   2008-05-18   
423-406 2 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2010-09-09   
423-406 3 Midway (Sullivan) TN JHCYTNXCX3X  7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 956   2010-06-10   
423-406 4 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2015-06-13   
423-406 5 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2016-08-26   
423-406 6 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2018-06-09   
423-406 7 Midway (Sullivan) TN   124F BANDWIDTH.COM CLEC, LLC - TN 956   2025-10-10   
423-406 8 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2018-08-25   
423-406 9 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-01-11   

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

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