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: 559

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-559 A McBain MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-559 0 McBain MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2013-02-22   
231-559 1 McBain MI   624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-559 2 McBain MI   543C ONVOY, LLCV - MI 348   2016-03-22   
231-559 3 McBain MI   543C ONVOY, LLCV - MI 348   2016-03-22   
231-559 4 McBain MI   543C ONVOY, LLCV - MI 348   2021-03-06   
231-559 5 McBain MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2024-06-11   
231-559 6 McBain MI   543C ONVOY, LLCV - MI 348   2021-03-06   
231-559 7 McBain MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-18   
231-559 8 McBain MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-05-04   
231-559 9 McBain MI   543C ONVOY, LLCV - MI 348   2013-03-18   

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

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