Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-623 A Sand River MI MNSGMIXJDS2  116F PENINSULA FIBER NETWORK, LLC - MI 342      
906-623 0 Sand River MI MNSGMIXJDS2  116F PENINSULA FIBER NETWORK, LLC - MI 342   2013-11-23   
906-623 2 Sand River MI MRQTMIMNX2X  624H ONVOY SPECTRUM, LLC 342   2024-08-05   
906-623 3 Sand River MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2021-03-27   
906-623 6 Sand River MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2020-06-08   

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

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