Local Calling Guide

Area code/prefix search

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NPA: 540 [Rate centres in NPA 540] [Dial plan for NPA 540]

NXX: 279

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
540-279 A Mountain Grove VA MTGVVAXARS0  0238 MGW TELEPHONE COMPANY, INC. 244      

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

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