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: 443

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-443 A Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-443 3 Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-11   
231-443 4 Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-11   
231-443 5 Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-11   
231-443 6 Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-11   
231-443 7 Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-12-29   
231-443 8 Honor MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-443 9 Honor MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-06   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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