Local Calling Guide

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Havre, MT

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-879 7   453F ONVOY, LLC - MT 648   2012-12-13   
406-879 9   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-03-29   
406-945 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 0   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 1   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 2   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 3   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 4   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 5   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 7   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2006-06-08   
406-945 8   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-945 9   792K CHARTER IP ENABLED SERVICES, LLC 648   2008-11-21   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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