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: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
821-444 A Landrum SC   548E ONVOY, LLC - SC 430   2025-09-08   
821-444 0 Landrum SC   548E ONVOY, LLC - SC 430   2025-09-08   
821-444 1 Landrum SC   6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 430   2025-11-04   
821-444 4 Landrum SC   548E ONVOY, LLC - SC 430   2025-09-08   
821-444 5 Landrum SC   145J TERRA NOVA TELECOM INC. 430   2025-09-09   

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

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