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: 843 [Rate centres in NPA 843] [Dial plan for NPA 843]

NXX: 978

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
843-978 A Jefferson SC FLRNSCMAXAY  1784 SOUTH CAROLINA NET, INC. - SC 432      
843-978 0 Jefferson SC FLRNSCMAXCY  548E ONVOY, LLC - SC 432   2023-08-26   
843-978 1 Jefferson SC FLRNSCMAXAY  1784 SOUTH CAROLINA NET, INC. - SC 432   2018-01-05   
843-978 2 Jefferson SC FLRNSCMAXCY  548E ONVOY, LLC - SC 432   2022-12-19   
843-978 6 Jefferson SC FLRNSCMAX9X  635C TELEPORT COMMUNICATIONS AMERICA SC- LLC 432   2020-11-11   
843-978 7 Jefferson SC FLRNSCMAXCY  548E ONVOY, LLC - SC 432   2021-10-11   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.