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: LNNGMIMNXPY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-213 2 Charlotte MI 528A FIRST COMMUNICATIONS, LLC - MI 346   2009-12-28   
517-348 1 Lansing MI 528A FIRST COMMUNICATIONS, LLC - MI 346   2009-05-27   
517-554 3 Albion MI 528A FIRST COMMUNICATIONS, LLC - MI 346   2008-09-05   
517-748 4 Jackson MI 528A FIRST COMMUNICATIONS, LLC - MI 346   2010-07-09   
517-883 A Mason MI 528A FIRST COMMUNICATIONS, LLC - MI 346      
517-883 0 Mason MI 528A FIRST COMMUNICATIONS, LLC - MI 346   2008-03-27   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.