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: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-376 A Twin Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-376 3 Twin Lake MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-11-05   
231-376 6 Twin Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-09-03   

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

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