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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Switch: ADRNMIXGMMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-276 2 Hudson MI 624H ONVOY SPECTRUM, LLC 340      
517-280 4 Adrian MI 624H ONVOY SPECTRUM, LLC 340      
517-401 5 Morenci MI 624H ONVOY SPECTRUM, LLC 340      
517-457 4 Tipton MI 624H ONVOY SPECTRUM, LLC 340      
517-516 A Onsted MI 624H ONVOY SPECTRUM, LLC 340      
517-516 5 Onsted MI 624H ONVOY SPECTRUM, LLC 340      
517-516 9 Onsted MI 624H ONVOY SPECTRUM, LLC 340      
517-557 A Britton MI 624H ONVOY SPECTRUM, LLC 340      
517-557 5 Britton MI 624H ONVOY SPECTRUM, LLC 340      
517-633 4 Adrian MI 624H ONVOY SPECTRUM, LLC 340      
517-633 5 Adrian MI 624H ONVOY SPECTRUM, LLC 340      
517-682 8 Blissfield MI 624H ONVOY SPECTRUM, LLC 340      
517-701 0 Clinton MI 624H ONVOY SPECTRUM, LLC 340      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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