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, LLCV - MI 348      
231-283 0 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2021-10-01   
231-283 1 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-01-07   
231-283 2 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-01-07   
231-283 3 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-01-07   
231-283 4 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-01-07   
231-283 5 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-02-18   
231-283 6 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-02-18   
231-283 7 Muskegon MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   
231-283 8 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-05-24   
231-283 9 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2021-10-01   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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