Local Calling Guide

Area code/prefix search

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Switch: BLNGMT30RS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-894 7 Billings MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650   2019-02-28   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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