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.

Harman, WV

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
304-227 A HAMNWVXARS0  0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 256      
681-259 A CLBGWVMAXVX  449F ONVOY, LLC - WV 256      
681-259 0 CLBGWVMAXVX  449F ONVOY, LLC - WV 256   2021-03-07   
681-259 1 CLBGWVMAXVX  449F ONVOY, LLC - WV 256   2021-03-07   
681-259 2 CLBGWVMA9MD  624H ONVOY SPECTRUM, LLC 256   2021-06-04   
681-259 6 CLBGWVMAXVX  449F ONVOY, LLC - WV 256   2019-02-22   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.