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: 871

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-871 A Beulah MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-871 0 Beulah MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-871 1 Beulah MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-08-20   
231-871 3 Beulah MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-871 6 Beulah MI   145J TERRA NOVA TELECOM INC. 348   2025-07-27   
231-871 8 Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2019-07-29   
231-871 9 Beulah MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2025-01-10   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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