Local Calling Guide

Area code/prefix search

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Lake Orion, MI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
947-622 8   543C ONVOY, LLCV - MI 340   2021-03-27   
947-622 9   543C ONVOY, LLCV - MI 340   2021-03-27   

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

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