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: 434

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-434 A Shelby MT SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 2 Shelby MT SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 3 Shelby MT SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 5 Shelby MT SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 6 Shelby MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-02-21   
406-434 7 Shelby MT SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 8 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-09   
406-434 9 Shelby MT SHLBMTMADS0  9636 QWEST CORPORATION 648      

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

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