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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: GDRPMIBL36Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-393 A Le Roy MI 624H ONVOY SPECTRUM, LLC 348      
231-466 A Evart MI 624H ONVOY SPECTRUM, LLC 348      
231-732 A Morley MI 624H ONVOY SPECTRUM, LLC 348      
269-260 A Baroda MI 624H ONVOY SPECTRUM, LLC 348      
269-296 A Eau Claire MI 624H ONVOY SPECTRUM, LLC 348      
269-379 A Bellevue MI 624H ONVOY SPECTRUM, LLC 348      
269-396 A Sawyer MI 624H ONVOY SPECTRUM, LLC 348      
269-622 A Fulton MI 624H ONVOY SPECTRUM, LLC 348      
269-644 A Galien MI 624H ONVOY SPECTRUM, LLC 348      
616-500 A Grand Rapids MI 624H ONVOY SPECTRUM, LLC 348      
616-515 A Casnovia MI 624H ONVOY SPECTRUM, LLC 348      
616-601 A Freeport MI 624H ONVOY SPECTRUM, LLC 348      
616-661 A Sparta MI 624H ONVOY SPECTRUM, LLC 348      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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