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: 665

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-665 A Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 1 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 2 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 3 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 4 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 5 Hardin MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-665 6 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 7 Hardin MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-665 8 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      
406-665 9 Hardin MT HRDNMTMARS1  9636 QWEST CORPORATION 650      

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

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