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: 447

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-447 A Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 1 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 2 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 3 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 4 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 5 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 6 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 7 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 8 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 9 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      

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

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