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: 393

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-393 A Le Roy MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348      
231-393 1 Le Roy MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2025-03-09   
231-393 3 Le Roy MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-09-04   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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