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: 858

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-858 A Blountville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-858 0 Blountville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2024-03-28   
423-858 1 Blountville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2024-03-28   
423-858 2 Blountville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-10-14   
423-858 3 Blountville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-10-14   
423-858 8 Blountville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2024-03-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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