Local Calling Guide

Area code/prefix search

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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 831

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-831 A East Jordan MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348      
231-831 0 East Jordan MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-06   
231-831 1 East Jordan MI   145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-831 2 East Jordan MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-831 3 East Jordan MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   
231-831 6 East Jordan MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-831 8 East Jordan MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-04-17   
231-831 9 East Jordan MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2023-10-28   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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