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 Switch LATA LIR Eff date Disc date
989-886 1 Vickeryville MI   344   2025-07-27   
989-898 7 Midland MI   344   2018-08-12   
989-912 2 Cass City MI   344   2007-07-20   
989-966 2 Vanderbilt MI   344   2007-03-18   
989-981 7 Hubbardston MI   344   2025-07-13   
989-984 5 East Tawas MI   344   2013-02-16   

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Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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