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.

NPA: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-401 A Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344      
989-401 0 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2007-02-25   
989-401 1 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2007-12-28   
989-401 2 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2008-03-21   
989-401 3 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2008-08-21   
989-401 4 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2009-03-14   
989-401 5 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2010-07-12   
989-401 6 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2009-12-30   
989-401 7 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2012-07-16   
989-401 8 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2014-04-03   
989-401 9 Saginaw MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2015-05-17   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.