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: 525

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-525 A Huntington Zone 1 WV HNTNWVDTDS0  9214 FRONTIER WEST VIRGINIA INC. 254      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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