Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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South Chester, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-456 A HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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