Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
810-380 9 Flushing MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
810-433 8 Fenton MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
810-433 9 Fenton MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
810-442 5 Deckerville MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
810-458 0 Linden MI 624H ONVOY SPECTRUM, LLC 340   2021-06-14   
810-466 4 Columbiaville MI 624H ONVOY SPECTRUM, LLC 340   2024-03-23   
810-474 5 Avoca MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
810-500 3 Hadley MI 624H ONVOY SPECTRUM, LLC 340   2024-03-23   
810-525 8 Emmett MI 624H ONVOY SPECTRUM, LLC 340   2021-06-14   
810-537 8 Sandusky MI 624H ONVOY SPECTRUM, LLC 340   2021-06-15   
810-617 3 Otisville MI 624H ONVOY SPECTRUM, LLC 340   2024-03-23   
810-633 7 Applegate MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
810-634 2 New Lothrop MI 624H ONVOY SPECTRUM, LLC 340   2021-06-15   
810-642 1 Smiths Creek MI 624H ONVOY SPECTRUM, LLC 340   2021-06-15   
810-645 6 Port Sanilac MI 624H ONVOY SPECTRUM, LLC 340   2021-06-15   
810-666 7 Flint MI 624H ONVOY SPECTRUM, LLC 340   2020-07-07   
810-666 8 Flint MI 624H ONVOY SPECTRUM, LLC 340   2020-07-07   
810-666 9 Flint MI 624H ONVOY SPECTRUM, LLC 340   2020-07-07   
810-669 7 Capac MI 624H ONVOY SPECTRUM, LLC 340   2021-11-21   
810-669 8 Capac MI 624H ONVOY SPECTRUM, LLC 340   2021-11-21   
810-672 2 Snover MI 624H ONVOY SPECTRUM, LLC 340   2024-03-23   
810-692 9 Byron MI 624H ONVOY SPECTRUM, LLC 340   2021-11-21   
810-710 2 Carsonville MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
810-740 8 St Clair MI 624H ONVOY SPECTRUM, LLC 340   2021-06-15   
810-746 2 Hartland MI 624H ONVOY SPECTRUM, LLC 340   2021-11-22   
810-748 4 Algonac MI 624H ONVOY SPECTRUM, LLC 340   2022-02-21   
810-788 4 Yale MI 624H ONVOY SPECTRUM, LLC 340   2021-06-17   
810-794 6 Algonac MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
810-796 5 Dryden MI 624H ONVOY SPECTRUM, LLC 340   2021-06-14   
810-799 1 Grand Blanc MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
810-799 2 Grand Blanc MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
810-818 6 Montrose MI 624H ONVOY SPECTRUM, LLC 340   2021-06-14   
810-842 4 Imlay City MI 624H ONVOY SPECTRUM, LLC 340   2021-06-14   
810-878 6 Croswell MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
810-881 0 Peck MI 624H ONVOY SPECTRUM, LLC 340   2024-03-23   
810-884 7 Marine City MI 624H ONVOY SPECTRUM, LLC 340   2021-06-14   
810-886 5 Brown City MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
947-204 1 Milford-White Lake MI 624H ONVOY SPECTRUM, LLC 340   2020-07-07   
947-204 2 Milford-White Lake MI 624H ONVOY SPECTRUM, LLC 340   2020-07-07   
947-204 3 Milford-White Lake MI 624H ONVOY SPECTRUM, LLC 340   2020-07-07   
947-219 7 Birmingham MI 624H ONVOY SPECTRUM, LLC 340   2021-06-13   
947-223 8 Commerce MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
947-223 9 Commerce MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
947-226 1 Auburn Heights MI 624H ONVOY SPECTRUM, LLC 340   2021-07-01   
947-226 7 Auburn Heights MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
947-226 9 Auburn Heights MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
947-227 3 Walled Lake MI 624H ONVOY SPECTRUM, LLC 340   2021-06-17   
947-227 6 Walled Lake MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
947-227 9 Walled Lake MI 624H ONVOY SPECTRUM, LLC 340   2021-12-02   
947-229 3 Clarkston MI 624H ONVOY SPECTRUM, LLC 340   2021-07-11   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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