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: CHTNSCDT23Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
843-843 A Charleston SC 624H ONVOY SPECTRUM, LLC 436      
854-803 A Folly Beach SC 624H ONVOY SPECTRUM, LLC 436      
854-839 A Sullivans Island SC 624H ONVOY SPECTRUM, LLC 436      
854-845 A Low Country SC 624H ONVOY SPECTRUM, LLC 436      
854-864 A Isle of Palms SC 624H ONVOY SPECTRUM, LLC 436      
854-902 A Charleston SC 624H ONVOY SPECTRUM, LLC 436      
854-910 A Yemassee SC 624H ONVOY SPECTRUM, LLC 436      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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