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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-278 A Hesperia MI 624H ONVOY SPECTRUM, LLC 348      
231-278 2 Hesperia MI 624H ONVOY SPECTRUM, LLC 348      
231-278 9 Hesperia MI 624H ONVOY SPECTRUM, LLC 348      
231-283 8 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-374 1 Shelby MI 624H ONVOY SPECTRUM, LLC 348      
231-374 2 Shelby MI 624H ONVOY SPECTRUM, LLC 348      
231-374 7 Shelby MI 624H ONVOY SPECTRUM, LLC 348      
231-404 6 Stanwood MI 624H ONVOY SPECTRUM, LLC 348      
231-447 6 Holton MI 624H ONVOY SPECTRUM, LLC 348      
231-455 2 Pentwater MI 624H ONVOY SPECTRUM, LLC 348      
231-480 8 Ludington MI 624H ONVOY SPECTRUM, LLC 348      
231-500 7 Whitehall MI 624H ONVOY SPECTRUM, LLC 348      
231-567 0 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-567 1 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-567 2 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-567 4 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-636 8 Howard City MI 624H ONVOY SPECTRUM, LLC 348      
231-681 6 Fruitport MI 624H ONVOY SPECTRUM, LLC 348      
231-685 2 Ravenna MI 624H ONVOY SPECTRUM, LLC 348      
231-721 6 Hart MI 624H ONVOY SPECTRUM, LLC 348      
231-888 3 Twin Lake MI 624H ONVOY SPECTRUM, LLC 348      
231-900 2 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-900 5 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-900 6 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
231-900 7 Muskegon MI 624H ONVOY SPECTRUM, LLC 348      
616-310 2 Coopersville MI 624H ONVOY SPECTRUM, LLC 348      
616-310 9 Coopersville MI 624H ONVOY SPECTRUM, LLC 348      
616-625 4 Conklin MI 624H ONVOY SPECTRUM, LLC 348      

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

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