Local Calling Guide

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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   792K CHARTER IP ENABLED SERVICES, LLC 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 5 Ellsworth MI   543C ONVOY, LLCV - MI 348   2021-07-11   
231-588 6 Ellsworth MI   0695 FRONTIER NORTH, INC. - MI 348      
231-588 7 Ellsworth MI   543C ONVOY, LLCV - MI 348   2013-04-01   
231-588 8 Ellsworth MI   543C ONVOY, LLCV - MI 348   2021-06-17   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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