Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 839 [Rate centres in NPA 839] [Dial plan for NPA 839]

NXX: 287

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
839-287 A Sumter SC CLMASCLNQMD  6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 434   2024-05-20   
839-287 0 Sumter SC   6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 434   2025-11-12   
839-287 1 Sumter SC CLMASCSNXSY  548E ONVOY, LLC - SC 434   2024-06-08   
839-287 2 Sumter SC   6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 434   2025-09-10   
839-287 3 Sumter SC   8645 SUNCOM DBA T-MOBILE USA 434   2025-03-29   
839-287 7 Sumter SC   6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 434   2025-07-05   
839-287 8 Sumter SC   6398 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 434   2025-08-05   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.