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: 373

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-373 A Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      
406-373 0 Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      
406-373 1 Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      
406-373 2 Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      
406-373 3 Billings MT BLNGMTWEDS0  9636 QWEST CORPORATION 650      
406-373 4 Billings MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2022-12-17   
406-373 5 Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      
406-373 6 Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      
406-373 7 Billings MT BLNGMTMADS1  9636 QWEST CORPORATION 650      
406-373 8 Billings MT BLNGMTWEDS0  9636 QWEST CORPORATION 650   2004-11-22   
406-373 9 Billings MT SHPHMTMARS1  9636 QWEST CORPORATION 650      

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

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