Local Calling Guide

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NPA: 779 [Rate centres in NPA 779] [Dial plan for NPA 779]

NXX: 432

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-432 A Sheffield IL SHFDIL010MD  4837 MTCO COMMUNICATIONS, INC. 368      

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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