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: 283

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-283 A Muskegon MI GDRPMIBL04Z  543C ONVOY, LLC - MI 348   2021-01-07   
231-283 1 Muskegon MI   543C ONVOY, LLC - MI 348   2021-01-07   
231-283 2 Muskegon MI   543C ONVOY, LLC - MI 348   2021-01-07   
231-283 3 Muskegon MI   543C ONVOY, LLC - MI 348   2021-01-07   
231-283 4 Muskegon MI   543C ONVOY, LLC - MI 348   2021-01-07   
231-283 5 Muskegon MI   543C ONVOY, LLC - MI 348   2021-02-18   
231-283 6 Muskegon MI   543C ONVOY, LLC - MI 348   2021-02-18   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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