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: LNNGMIDCMMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-213 2 Charlotte MI 460K FIRST COMMUNICATIONS, LLC 346   2009-12-28   
517-348 1 Lansing MI 460K FIRST COMMUNICATIONS, LLC 346   2009-05-27   
517-554 3 Albion MI 460K FIRST COMMUNICATIONS, LLC 346   2008-09-05   
517-680 A Albion MI 460K FIRST COMMUNICATIONS, LLC 346      
517-680 2 Albion MI 460K FIRST COMMUNICATIONS, LLC 346   2024-09-10   
517-748 4 Jackson MI 460K FIRST COMMUNICATIONS, LLC 346   2010-07-09   
517-883 A Mason MI 460K FIRST COMMUNICATIONS, LLC 346      
517-883 0 Mason MI 460K FIRST COMMUNICATIONS, LLC 346   2008-03-27   

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

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