Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 304 [Rate centres in NPA 304] [Dial plan for NPA 304]

NXX: 978

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-978 A Clay WV   612K CSC VOICE, LLC 254      
304-978 1 Clay WV CHTNWVLEEMD  073H TELNYX LLC 254   2021-03-04   
304-978 2 Clay WV CHTNWVBMDS0  2765 LUMOS NETWORKS OF WEST VIRGINIA INC. - WV 254   2018-10-19   
304-978 3 Clay WV HNTNWVDT0MD  9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254   2023-05-22   
304-978 4 Clay WV CHTNWVLE7MD  391E CEBRIDGE TELECOM WV, LLC DBA SUDDENLINK COMMS - WV 254   2009-02-04   
304-978 5 Clay WV CHTNWVLEGMD  624H ONVOY SPECTRUM, LLC 254   2021-11-08   
304-978 6 Clay WV CHTNWVLEGMD  624H ONVOY SPECTRUM, LLC 254   2021-05-31   
304-978 7 Clay WV CHTNWVLEXBZ  449F ONVOY, LLC - WV 254   2018-11-05   
304-978 8 Clay WV CHTNWVLEXBZ  449F ONVOY, LLC - WV 254   2021-03-08   
304-978 9 Clay WV CHTNWVLEXBZ  449F ONVOY, LLC - WV 254   2021-03-08   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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