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: 419

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-419 A Bellaire MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-419 0 Bellaire MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2023-10-10   
231-419 1 Bellaire MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2025-09-04   
231-419 2 Bellaire MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-09-10   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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