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: GFTPMIEF1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-227 A Honor MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2012-11-10   
231-295 A Lake City MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2012-11-10   
231-359 A Mecosta MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2012-11-10   
231-421 A Traverse City MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-626 A Levering MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2012-11-10   
269-365 A Kalamazoo MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
616-275 A Caledonia MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2012-07-01   

Last updated: Sat, 08 Jun 2019 01:52:21 UTC

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