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: 561

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-561 A Sweetwater TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2024-01-15   
423-561 0 Sweetwater TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2014-09-22   
423-561 1 Sweetwater TN   124F BANDWIDTH.COM CLEC, LLC - TN 474   2016-07-23   
423-561 2 Sweetwater TN   525E ONVOY, LLC - TN 474   2016-03-28   
423-561 3 Sweetwater TN   525E ONVOY, LLC - TN 474   2016-03-28   
423-561 5 Sweetwater TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2016-12-01   
423-561 6 Sweetwater TN   114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 474   2015-04-27   
423-561 7 Sweetwater TN   490J DISH WIRELESS, LLC 474   2024-03-22   
423-561 8 Sweetwater TN   525E ONVOY, LLC - TN 474   2016-06-09   
423-561 9 Sweetwater TN   525E ONVOY, LLC - TN 474   2016-06-09   

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

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