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: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-304 A Brutus MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-304 1 Brutus MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-01-07   
231-304 3 Brutus MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-304 4 Brutus MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-12-26   
231-304 5 Brutus MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-12-26   
231-304 8 Brutus MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-03-04   
231-304 9 Brutus MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-12   

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

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