Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-314 3 Kalispell MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2005-09-26   
406-314 5 Kalispell MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2006-03-20   
406-314 7 Kalispell MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2018-09-21   
406-314 9 Kalispell MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2015-10-29   
406-340 A Lima MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-350 A Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-350 0 Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-350 1 Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-350 2 Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-350 3 Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-350 8 Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2026-01-17   
406-350 9 Lewistown MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2014-11-22   
406-363 8 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 A Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 0 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 1 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 2 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 3 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 4 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-369 8 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   
406-375 1 Hamilton MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-06-30   
406-382 A Superior MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-382 0 Superior MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-382 1 Superior MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-10-10   
406-382 9 Superior MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2018-04-05   
406-391 A Cut Bank MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-391 0 Cut Bank MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2026-01-17   
406-407 6 Kalispell MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-10-26   
406-407 8 Kalispell MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2011-07-08   
406-417 A Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-417 0 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2008-07-19   
406-417 4 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2024-11-30   
406-417 5 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2023-11-20   
406-417 8 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2021-03-06   
406-417 9 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2019-12-21   
406-439 A Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 0 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 1 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 2 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 3 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 4 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 5 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 6 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 7 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 8 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 9 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-440 2 Helena MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-09-14   
406-460 A Shelby MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 0 Shelby MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 1 Shelby MT 6010 NEW CINGULAR WIRELESS PCS, LLC 648      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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