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: 247

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-247 A Williamsburg MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-247 0 Williamsburg MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2018-11-30   
231-247 1 Williamsburg MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
231-247 2 Williamsburg MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-06-17   
231-247 4 Williamsburg MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-247 5 Williamsburg MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-247 6 Williamsburg MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-247 7 Williamsburg MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-27   
231-247 8 Williamsburg MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-08-22   
231-247 9 Williamsburg MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-12-29   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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