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: 333

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
821-333 A Spartanburg SC GNVLSCDTXJX  548E ONVOY, LLC - SC 430   2025-09-08   
821-333 0 Spartanburg SC GNVLSCDTXJX  548E ONVOY, LLC - SC 430   2025-09-08   
821-333 1 Spartanburg SC GNVLSCHPX9X  6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 430   2025-09-09   
821-333 3 Spartanburg SC GNVLSCDTXJX  548E ONVOY, LLC - SC 430   2025-09-08   
821-333 5 Spartanburg SC GNVLSCMCXQX  490J BOOST SUBSCRIBERCO L.L.C. 430   2025-09-09   
821-333 6 Spartanburg SC   145J TERRA NOVA TELECOM INC. 430   2025-09-09   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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