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: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-628 A Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 0 Laurel MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-628 1 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 2 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 3 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 4 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 5 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 6 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 7 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 8 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      
406-628 9 Laurel MT LARLMTMARS1  9636 QWEST CORPORATION 650      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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