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

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
854-839 A Sullivans Island SC 624H ONVOY SPECTRUM, LLC 436      
854-839 0 Sullivans Island SC 624H ONVOY SPECTRUM, LLC 436   2021-12-17   
854-839 1 Sullivans Island SC 624H ONVOY SPECTRUM, LLC 436   2021-12-17   
854-845 A Low Country SC 624H ONVOY SPECTRUM, LLC 436      
854-845 5 Low Country SC 624H ONVOY SPECTRUM, LLC 436   2023-06-26   
854-864 A Isle of Palms SC 624H ONVOY SPECTRUM, LLC 436      
854-864 0 Isle of Palms SC 624H ONVOY SPECTRUM, LLC 436   2021-12-17   
854-864 1 Isle of Palms SC 624H ONVOY SPECTRUM, LLC 436   2021-12-17   
854-902 A Charleston SC 624H ONVOY SPECTRUM, LLC 436      
854-902 9 Charleston SC 624H ONVOY SPECTRUM, LLC 436   2021-06-14   
854-910 A Yemassee SC 624H ONVOY SPECTRUM, LLC 436      
854-910 0 Yemassee SC 624H ONVOY SPECTRUM, LLC 436   2021-12-17   
854-910 1 Yemassee SC 624H ONVOY SPECTRUM, LLC 436   2021-12-17   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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