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: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-299 A Benton TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-299 0 Benton TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2004-11-15   
423-299 1 Benton TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2017-03-26   
423-299 2 Benton TN   525E ONVOY, LLC - TN 472   2009-07-23   
423-299 3 Benton TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2010-03-04   
423-299 4 Benton TN   525E ONVOY, LLC - TN 472   2017-04-24   
423-299 5 Benton TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2008-11-28   
423-299 6 Benton TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2017-03-26   
423-299 9 Benton TN   318J COMCAST IP PHONE, LLC 472   2007-04-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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