Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-375 A Crystal Falls MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2024-03-04   
906-375 0 Crystal Falls MI   792K CHARTER IP ENABLED SERVICES, LLC 342   2025-08-10   
906-375 1 Crystal Falls MI MRQTMIMNX2X  624H ONVOY SPECTRUM, LLC 342   2024-06-29   
906-375 8 Crystal Falls MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2023-09-03   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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