Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 681 [Rate centres in NPA 681] [Dial plan for NPA 681]

NXX: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
681-640 A Bluefield WV   700J WAVENATION, LLC 932   2026-03-06   
681-640 0 Bluefield WV   700J WAVENATION, LLC 932   2026-03-06   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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