Local Calling Guide

Area code/prefix search

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NPA: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 481

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-481 A Houghton MI CHSLMI01RP0  4253 BARAGA TELEPHONE COMPANY 342      

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

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