Local Calling Guide

Area code/prefix search

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Billings, MT

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-998 8 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2016-02-05   
406-998 9 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2015-12-04   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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