Local Calling Guide

Area code/prefix search

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Switch: OLMSMIXIRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-223 A Old Mission MI 0720 ACE TEL. CO. OF MICHIGAN, INC. 348      

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

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