Local Calling Guide

Area code/prefix search

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Eureka Rural, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-297 A ERKRMTXCDS1  3959 INTERBEL TELEPHONE COOPERATIVE, INC. - MT 648      
406-882 A ERKRMTXCDS1  2242 INTERBEL TEL. COOP., INC. 648      
406-889 A ERKRMTXCDS1  2242 INTERBEL TEL. COOP., INC. 648      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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