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: JCSNMIMNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-205 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-768 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-780 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-782 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-783 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-784 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-787 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-788 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-789 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-796 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-817 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-840 A Jackson MI 9323 AMERITECH MICHIGAN 346      
517-841 A Jackson MI 9323 AMERITECH MICHIGAN 346      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.