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.

NPA: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 856

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-856 A Caseville MI CSVLMIXHDS0  0695 FRONTIER NORTH, INC. - MI 344      
989-856 0 Caseville MI   2550 123.NET, LLC 344   2003-03-08   
989-856 1 Caseville MI   318J COMCAST IP PHONE, LLC 344   2010-11-30   
989-856 2 Caseville MI   0695 FRONTIER NORTH, INC. - MI 344      
989-856 3 Caseville MI   0695 FRONTIER NORTH, INC. - MI 344      
989-856 4 Caseville MI   0695 FRONTIER NORTH, INC. - MI 344      
989-856 5 Caseville MI   543C ONVOY, LLCV - MI 344   2013-03-15   
989-856 6 Caseville MI   991E BANDWIDTH.COM CLEC, LLC - MI 344   2012-07-09   
989-856 7 Caseville MI   0695 FRONTIER NORTH, INC. - MI 344      
989-856 8 Caseville MI   0695 FRONTIER NORTH, INC. - MI 344      
989-856 9 Caseville MI   0695 FRONTIER NORTH, INC. - MI 344      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.