Local Calling Guide

Area code/prefix search

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OCN: 3959 INTERBEL TELEPHONE COOPERATIVE, INC. - MT

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-297 A Eureka Rural MT ERKRMTXCDS1  648      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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