Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-276 A FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-276 0   2255 3 RIVERS TEL. COOP., INC. 648      
406-276 1   2255 3 RIVERS TEL. COOP., INC. 648      
406-276 2   2255 3 RIVERS TEL. COOP., INC. 648      
406-276 3   2255 3 RIVERS TEL. COOP., INC. 648      
406-276 8   2255 3 RIVERS TEL. COOP., INC. 648      
406-276 9   2255 3 RIVERS TEL. COOP., INC. 648      
406-340 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-340 0   145J TERRA NOVA TELECOM INC. 648   2025-10-09   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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