Local Calling Guide

Area code/prefix search

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NPA: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 815

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-815 A Mount Pleasant MI ALMAMIXGSMD  506J TWILIO INTERNATIONAL, INC. 344   2025-01-06   
989-815 2 Mount Pleasant MI ALMAMIXGFMD  543C ONVOY, LLCV - MI 344   2023-08-12   
989-815 3 Mount Pleasant MI ALMAMIXGFMD  543C ONVOY, LLCV - MI 344   2023-08-12   
989-815 4 Mount Pleasant MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 344   2025-07-11   
989-815 8 Mount Pleasant MI ALMAMIXGSMD  506J TWILIO INTERNATIONAL, INC. 344   2025-01-07   

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

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