Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Hysham, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-342 A HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 0 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 1 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 2 BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2026-06-08   
406-342 4 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 5 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 6 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 7 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 8 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      
406-342 9 HYSHMTXCRS1  2251 RANGE TEL COOP INC 650      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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