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: 402

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-402 A Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348      
231-402 0 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2022-03-27   
231-402 1 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2022-03-27   
231-402 2 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-03-26   
231-402 3 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-03-26   
231-402 4 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-03-26   
231-402 5 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-03-26   
231-402 6 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348   2022-12-10   
231-402 7 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348   2023-04-09   
231-402 8 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2022-08-20   
231-402 9 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2022-08-20   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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