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: 803 [Rate centres in NPA 803] [Dial plan for NPA 803]

NXX: 546

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
803-546 A Columbia SC CLMASCSN13Z  8645 SUNCOM DBA T-MOBILE USA 434      
803-546 0 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 1 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 2 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 3 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 4 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 5 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 6 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 7 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 8 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      
803-546 9 Columbia SC   8645 SUNCOM DBA T-MOBILE USA 434      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.