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.

OCN: 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
989-235 9 Crystal MI   344   2025-07-27   
989-886 1 Vickeryville MI   344   2025-07-27   
989-981 7 Hubbardston MI OWTPMI020MD  344   2025-07-13   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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