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: 495

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-495 A Bellaire MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-495 0 Bellaire MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-09-07   
231-495 1 Bellaire MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2018-03-23   
231-495 2 Bellaire MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2019-09-15   
231-495 3 Bellaire MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-07-11   
231-495 4 Bellaire MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-18   
231-495 5 Bellaire MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-04-25   
231-495 7 Bellaire MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-04-28   
231-495 8 Bellaire MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2021-08-23   
231-495 9 Bellaire MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2016-09-12   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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