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: 659

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-659 A Copper Basin TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-659 0 Copper Basin TN   073H TELNYX LLC 472   2021-01-17   
423-659 1 Copper Basin TN   624H ONVOY SPECTRUM, LLC 472   2023-06-17   
423-659 2 Copper Basin TN   792K CHARTER IP ENABLED SERVICES, LLC 472   2026-02-22   
423-659 6 Copper Basin TN   114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472   2020-09-07   
423-659 8 Copper Basin TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2023-03-16   
423-659 9 Copper Basin TN   525E ONVOY, LLC - TN 472   2023-09-18   

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

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