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: WBRNMIMN4MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
989-278 4 Alpena MI 9245 CYNERGYCOMM.NET, INC. - MI 344   2006-06-25   
989-787 A West Branch MI 9245 CYNERGYCOMM.NET, INC. - MI 344      
989-787 1 West Branch MI 9245 CYNERGYCOMM.NET, INC. - MI 344   2005-09-26   
989-946 7 Standish MI 9245 CYNERGYCOMM.NET, INC. - MI 344   2006-11-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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