Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 266

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-266 A Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 0 Townsend MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2019-06-14   
406-266 1 Townsend MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   
406-266 3 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 4 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 5 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 6 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-08   
406-266 7 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-19   
406-266 9 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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