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
810-487 6 Flushing MI 528A FIRST COMMUNICATIONS, LLC - MI 340   2010-04-23   
810-584 2 Grand Blanc MI 528A FIRST COMMUNICATIONS, LLC - MI 340   2009-05-28   
810-714 6 Fenton MI 528A FIRST COMMUNICATIONS, LLC - MI 340   2016-02-21   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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