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: 546

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-546 A Bulls Gap TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-546 0 Bulls Gap TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2005-12-10   
423-546 1 Bulls Gap TN   073H TELNYX LLC 474   2021-03-22   
423-546 3 Bulls Gap TN   7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 474   2017-01-16   
423-546 4 Bulls Gap TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-546 5 Bulls Gap TN   516J TON80 COMMUNICATIONS, LLC 474   2022-03-26   
423-546 6 Bulls Gap TN   525E ONVOY, LLC - TN 474   2021-03-19   
423-546 7 Bulls Gap TN   525E ONVOY, LLC - TN 474   2021-03-19   
423-546 8 Bulls Gap TN   939H COMMIO, LLC 474   2022-12-11   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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