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: CHTNSCDTX4Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
843-277 A Charleston SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-278 A Charleston SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-408 A Charleston SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-410 A Charleston SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-474 A Laurel Bay SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-502 A St Helena Island SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-547 A Ridgeland SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-548 A Low Country SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-564 A Hollywood SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-605 A Beaufort SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-606 A Mount Pleasant SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-628 A Charleston SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-654 A Mount Pleasant SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      
843-776 A St Helena Island SC 5258 LEVEL 3 COMMUNICATIONS, LLC - SC 436      

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

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