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: CHTNWVLE2MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
304-307 9 Madison WV 321J HD CARRIER LLC 254   2020-11-01   
304-915 1 Charleston Zone 7 WV 321J HD CARRIER LLC 254   2020-11-02   
304-915 9 Charleston Zone 7 WV 321J HD CARRIER LLC 254   2020-11-02   
681-324 8 Clendenin WV 321J HD CARRIER LLC 254   2020-12-04   
681-682 7 Madison WV 321J HD CARRIER LLC 254   2020-11-01   
681-799 A Charleston Zone 1 WV 321J HD CARRIER LLC 254      
681-799 9 Charleston Zone 1 WV 321J HD CARRIER LLC 254   2019-03-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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