Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 854 [Rate centres in NPA 854] [Dial plan for NPA 854]

NXX: 858

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
854-858 A Mount Pleasant SC CHTNSCDTX6Y  548E ONVOY, LLC - SC 436      
854-858 0 Mount Pleasant SC   073H TELNYX LLC 436   2021-04-07   
854-858 1 Mount Pleasant SC   939H COMMIO, LLC 436   2021-07-08   
854-858 2 Mount Pleasant SC   8645 SUNCOM DBA T-MOBILE USA 436   2021-11-07   
854-858 3 Mount Pleasant SC   8645 SUNCOM DBA T-MOBILE USA 436   2021-11-07   
854-858 4 Mount Pleasant SC   8645 SUNCOM DBA T-MOBILE USA 436   2025-01-11   
854-858 5 Mount Pleasant SC   548E ONVOY, LLC - SC 436   2021-04-06   
854-858 6 Mount Pleasant SC   548E ONVOY, LLC - SC 436   2021-04-06   
854-858 7 Mount Pleasant SC   548E ONVOY, LLC - SC 436   2021-04-06   
854-858 8 Mount Pleasant SC   548E ONVOY, LLC - SC 436   2021-04-06   
854-858 9 Mount Pleasant SC   939H COMMIO, LLC 436   2021-07-08   

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

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