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: 757

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-757 A Decker MT DCKRMTXCRS1  2251 RANGE TEL COOP INC 654      
406-757 0 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 1 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 2 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 3 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 4 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 5 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 6 Decker MT   2251 RANGE TEL COOP INC 654      
406-757 7 Decker MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 654   2026-10-05   
406-757 9 Decker MT   2251 RANGE TEL COOP INC 654      

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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