Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Royal Oak, MI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
947-941 7 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   
947-941 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2021-11-06   
947-941 9 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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