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: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-600 A Letart WV CHTNWVLE7MD  391E CEBRIDGE TELECOM WV, LLC DBA SUDDENLINK COMMS - WV 254      
304-600 0 Letart WV   391E CEBRIDGE TELECOM WV, LLC DBA SUDDENLINK COMMS - WV 254      
304-600 1 Letart WV   073H TELNYX LLC 254   2021-03-05   
304-600 2 Letart WV   624H ONVOY SPECTRUM, LLC 254   2021-11-08   
304-600 3 Letart WV   624H ONVOY SPECTRUM, LLC 254   2021-05-31   
304-600 4 Letart WV   624H ONVOY SPECTRUM, LLC 254   2021-11-08   
304-600 5 Letart WV   624H ONVOY SPECTRUM, LLC 254   2021-11-08   
304-600 6 Letart WV   449F ONVOY, LLC - WV 254   2018-11-05   
304-600 7 Letart WV   449F ONVOY, LLC - WV 254   2020-12-05   
304-600 8 Letart WV   449F ONVOY, LLC - WV 254   2020-12-05   
304-600 9 Letart WV   624H ONVOY SPECTRUM, LLC 254   2021-11-08   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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