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: 489

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-489 A Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 0 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 1 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 2 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 3 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 4 Sidney MT   145J TERRA NOVA TELECOM INC. 650   2022-04-10   
406-489 5 Sidney MT   145J TERRA NOVA TELECOM INC. 650   2023-06-24   
406-489 6 Sidney MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2024-09-14   
406-489 8 Sidney MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2025-01-23   

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

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