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: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-376 A Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2024-01-15   
423-376 0 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474      
423-376 1 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2019-01-11   
423-376 2 Madisonville TN KNVLTNWHX6X  5562 METROPCS, INC. 474   2021-05-07   
423-376 5 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2023-09-09   
423-376 6 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2021-03-19   
423-376 7 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2021-03-19   
423-376 8 Madisonville TN KNVNTNEC0MD  073H TELNYX LLC 474   2018-09-21   
423-376 9 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2019-01-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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