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: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-444 A Rock MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342      
906-444 4 Rock MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2021-03-10   
906-444 5 Rock MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2021-03-10   
906-444 6 Rock MI PRKNMIATQMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 342   2021-12-18   
906-444 7 Rock MI BRLDMIMNBMD  516C AT&T CORP. 342   2023-09-25   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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