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: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-321 A Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-321 0 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-321 1 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-321 2 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-321 3 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-321 4 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-321 5 Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-321 6 Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-321 7 Columbus MT   145J TERRA NOVA TELECOM INC. 650      
406-321 8 Columbus MT BLNGMT93DS0  588H AIRUS, INC. - MT 650      
406-321 9 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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