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: 422

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-422 A Pellston MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348      
231-422 0 Pellston MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-24   
231-422 1 Pellston MI   624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-422 2 Pellston MI   543C ONVOY, LLCV - MI 348   2023-05-16   
231-422 3 Pellston MI   543C ONVOY, LLCV - MI 348   2016-04-15   
231-422 4 Pellston MI   543C ONVOY, LLCV - MI 348   2016-04-15   
231-422 5 Pellston MI   543C ONVOY, LLCV - MI 348   2021-03-27   
231-422 7 Pellston MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-10-23   
231-422 8 Pellston MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2022-03-03   
231-422 9 Pellston MI   543C ONVOY, LLCV - MI 348   2022-03-04   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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