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.

Switch: CLMASCSNXMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
803-993 9 Denmark SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434   2004-06-12   
803-994 8 Whitmire SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434   2004-11-15   
839-205 A Lexington SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434      
839-205 2 Lexington SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434   2021-09-23   
839-285 5 Chester SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434   2024-07-25   
839-766 4 Great Falls SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434   2024-07-25   
843-701 A St George SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434      
843-701 4 St George SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434      
843-701 5 St George SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 434   2005-09-22   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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