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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-270 A Boyne City MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-270 0 Boyne City MI   145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-270 1 Boyne City MI   543C ONVOY, LLCV - MI 348   2022-12-29   
231-270 2 Boyne City MI   543C ONVOY, LLCV - MI 348   2022-03-04   
231-270 4 Boyne City MI   543C ONVOY, LLCV - MI 348   2021-09-10   
231-270 5 Boyne City MI   543C ONVOY, LLCV - MI 348   2021-09-10   
231-270 6 Boyne City MI   543C ONVOY, LLCV - MI 348   2021-12-13   
231-270 7 Boyne City MI   543C ONVOY, LLCV - MI 348   2021-07-24   
231-270 8 Boyne City MI   543C ONVOY, LLCV - MI 348   2021-07-24   
231-270 9 Boyne City MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2021-12-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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