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: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-331 A Keweenaw MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2024-03-04   
906-331 0 Keweenaw MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2021-11-22   
906-331 1 Keweenaw MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2023-09-03   
906-331 2 Keweenaw MI MRQTMIMNX2X  624H ONVOY SPECTRUM, LLC 342   2024-07-11   
906-331 7 Keweenaw MI BRLDMIMNBMD  516C AT&T CORP. 342   2023-09-25   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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