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: 699

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-699 A Hardin MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-699 0 Hardin MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-699 1 Hardin MT   145J TERRA NOVA TELECOM INC. 650   2022-05-05   
406-699 2 Hardin MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2023-08-06   
406-699 3 Hardin MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2022-12-17   
406-699 4 Hardin MT   145J TERRA NOVA TELECOM INC. 650   2024-05-10   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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