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: 588

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-588 A Ellsworth MI ELWOMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-588 0 Ellsworth MI   3535 ACD TELECOM, INC. - MI 348   2004-10-22   
231-588 1 Ellsworth MI   351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2008-08-27   
231-588 2 Ellsworth MI   0695 FRONTIER NORTH, INC. - MI 348      
231-588 3 Ellsworth MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2012-07-09   
231-588 6 Ellsworth MI   0695 FRONTIER NORTH, INC. - MI 348      
231-588 7 Ellsworth MI   543C ONVOY, LLC - MI 348   2013-04-01   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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