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: NGNEMIAM2MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
906-523 5 Houghton MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-04-23   
906-523 7 Houghton MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2010-09-06   
906-542 5 Channing MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2016-06-12   
906-553 7 Escanaba MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-04-23   
906-563 2 Norway MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-09-29   
906-663 2 Bessemer MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-04-23   
906-723 3 Bark River MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-04-23   
906-828 1 Iron Mountain MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-04-23   
906-828 2 Iron Mountain MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2012-04-23   
906-828 7 Iron Mountain MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2019-08-21   
906-934 2 Calumet MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-04-23   
906-984 2 St Ignace MI 351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 342   2007-06-18   

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

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