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.
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Switch: HNTNWVDT0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
304-220 A Charleston Zone 4 WV 9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254   2006-03-03   
304-936 A Winfield WV 9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254   2012-05-03   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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