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: 324

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-324 A Harbor Springs MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-324 0 Harbor Springs MI BRSPMI091MD  939H COMMIO, LLC 348   2021-11-14   
231-324 1 Harbor Springs MI BRSPMI091MD  939H COMMIO, LLC 348   2021-11-14   
231-324 2 Harbor Springs MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-28   
231-324 3 Harbor Springs MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-07-27   
231-324 4 Harbor Springs MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-07-27   
231-324 5 Harbor Springs MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-25   
231-324 6 Harbor Springs MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2022-04-26   
231-324 7 Harbor Springs MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-04-17   
231-324 8 Harbor Springs MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2022-01-06   
231-324 9 Harbor Springs MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   

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

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