Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 821 [Rate centres in NPA 821] [Dial plan for NPA 821]

NXX: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
821-666 A Laurens SC   548E ONVOY, LLC - SC 430   2025-10-18   
821-666 0 Laurens SC   145J TERRA NOVA TELECOM INC. 430   2025-10-20   
821-666 5 Laurens SC   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 430   2025-10-20   
821-666 6 Laurens SC   548E ONVOY, LLC - SC 430   2025-10-18   
821-666 7 Laurens SC   548E ONVOY, LLC - SC 430   2025-10-18   
821-666 8 Laurens SC   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 430   2025-10-20   
821-666 9 Laurens SC   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 430   2025-10-20   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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