Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 259

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-259 A Shelby MI ANTSMIADPS0  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-259 0 Shelby MI ANTSMIADPS0  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-04-05   
231-259 1 Shelby MI GDRPMIBL04Z  543C ONVOY, LLC - MI 348   2016-02-24   
231-259 2 Shelby MI GDRPMIBLX8Z  2550 123 NET, INC. 348   2016-01-22   
231-259 3 Shelby MI GDRQMIBODS0  7157 BROOKS FIBER COMMUNICATIONS OF MICHIGAN - MI 348   2016-05-02   
231-259 4 Shelby MI GDRPMIBL04Z  543C ONVOY, LLC - MI 348   2016-02-24   
231-259 5 Shelby MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2008-02-27   
231-259 6 Shelby MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2016-03-21   
231-259 7 Shelby MI   508J CENTURYLINK COMMUNICATIONS LLC 348   2017-10-05   
231-259 8 Shelby MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2019-09-05   
231-259 9 Shelby MI GDRPMIBL04Z  543C ONVOY, LLC - MI 348   2013-03-18   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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