Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: GDRPMIBL36Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-202 5 Mecosta MI 624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-212 1 Interlochen MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-212 3 Interlochen MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-212 5 Interlochen MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-247 4 Williamsburg MI 624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-247 5 Williamsburg MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-247 6 Williamsburg MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-251 3 Lake Leelanau MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-272 9 Kingsley MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-273 0 Eastport MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-273 1 Eastport MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-273 8 Eastport MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-277 9 Fountain MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-279 3 Big Rapids MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-280 2 Mancelona MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-281 6 Cadillac MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-284 3 Manistee MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-289 2 Charlevoix MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-290 2 Indian River MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-293 4 Frankfort MI 624H ONVOY SPECTRUM, LLC 348   2021-07-06   
231-294 3 Fife Lake MI 624H ONVOY SPECTRUM, LLC 348   2021-08-16   
231-294 8 Fife Lake MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-294 9 Fife Lake MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-296 2 Fremont MI 624H ONVOY SPECTRUM, LLC 348   2021-07-02   
231-297 1 Kingsley MI 624H ONVOY SPECTRUM, LLC 348   2021-12-03   
231-297 3 Kingsley MI 624H ONVOY SPECTRUM, LLC 348   2021-12-03   
231-298 2 Irons MI 624H ONVOY SPECTRUM, LLC 348   2021-07-02   
231-300 6 Alden MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-304 3 Brutus MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-310 9 Falmouth MI 624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-320 9 Torch River Bridge MI 624H ONVOY SPECTRUM, LLC 348   2024-05-25   
231-321 4 Elmira MI 624H ONVOY SPECTRUM, LLC 348   2021-07-23   
231-324 5 Harbor Springs MI 624H ONVOY SPECTRUM, LLC 348   2021-11-25   
231-324 9 Harbor Springs MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-354 4 Coral MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-359 0 Mecosta MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-359 9 Mecosta MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-364 6 Northport MI 624H ONVOY SPECTRUM, LLC 348   2021-08-16   
231-364 7 Northport MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-364 8 Northport MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-367 5 Wolverine MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-367 6 Wolverine MI 624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-381 3 White Cloud MI 624H ONVOY SPECTRUM, LLC 348   2021-07-02   
231-393 A Le Roy MI 624H ONVOY SPECTRUM, LLC 348      
231-393 3 Le Roy MI 624H ONVOY SPECTRUM, LLC 348   2021-09-04   
231-400 3 Alanson MI 624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-401 2 Traverse City MI 624H ONVOY SPECTRUM, LLC 348   2022-02-12   
231-401 3 Traverse City MI 624H ONVOY SPECTRUM, LLC 348   2022-02-12   
231-417 1 Petoskey MI 624H ONVOY SPECTRUM, LLC 348   2024-05-25   
231-418 0 Marion MI 624H ONVOY SPECTRUM, LLC 348   2024-05-25   

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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