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: 545

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-545 A Boyne Falls MI   792K CHARTER IP ENABLED SERVICES, LLC 348      
231-545 0 Boyne Falls MI   543C ONVOY, LLCV - MI 348   2023-08-12   
231-545 1 Boyne Falls MI   543C ONVOY, LLCV - MI 348   2021-03-06   
231-545 2 Boyne Falls MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2019-08-05   
231-545 3 Boyne Falls MI   543C ONVOY, LLCV - MI 348   2021-03-06   
231-545 4 Boyne Falls MI   543C ONVOY, LLCV - MI 348   2019-09-05   
231-545 5 Boyne Falls MI   624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-545 6 Boyne Falls MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2026-01-15   
231-545 9 Boyne Falls MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2016-11-21   

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

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