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: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-501 A Wayne WV CHTNWVLE7MD  391E CEBRIDGE TELECOM WV, LLC DBA SUDDENLINK COMMS - WV 254      
304-501 1 Wayne WV   449F ONVOY, LLC - WV 254   2020-12-06   
304-501 2 Wayne WV   449F ONVOY, LLC - WV 254   2020-12-06   
304-501 3 Wayne WV   624H ONVOY SPECTRUM, LLC 254   2021-06-03   
304-501 4 Wayne WV   391E CEBRIDGE TELECOM WV, LLC DBA SUDDENLINK COMMS - WV 254   2007-01-26   
304-501 5 Wayne WV   449F ONVOY, LLC - WV 254   2019-09-03   
304-501 6 Wayne WV   9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254   2021-07-22   
304-501 7 Wayne WV   449F ONVOY, LLC - WV 254   2023-01-01   
304-501 8 Wayne WV   449F ONVOY, LLC - WV 254   2021-07-26   
304-501 9 Wayne WV   624H ONVOY SPECTRUM, LLC 254   2021-11-11   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.