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: LNNGMIMNXOY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-296 8 Montgomery MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 346   2017-07-08   
517-793 1 Litchfield MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 346   2012-10-05   
517-901 A Reading MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 346      
517-901 0 Reading MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 346   2007-11-19   
517-932 0 Allen MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 346   2017-07-22   

Last updated: Fri, 03 Nov 2023 21:02:38 UTC

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