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.

NPA: 304 [Rate centres in NPA 304] [Dial plan for NPA 304]

NXX: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-375 A Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 0 Williamstown WV CHTNWVCE8MD  545B CITYNET WEST VIRGINIA, LLC - WV 254   2004-04-05   
304-375 2 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 3 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 4 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 5 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 6 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 7 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      
304-375 8 Williamstown WV PRBGWVFWDS0  875F CAS COMMUNICATIONS, LLC - WV 254   2011-09-12   
304-375 9 Williamstown WV WLTWWVJURS1  9214 FRONTIER WEST VIRGINIA INC. 254      

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.