Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Whittemore, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-232 A   817J INTERACTIVE SERVICES NETWORK, INC. 344      
989-452 A SGNWMIFAXKX  543C ONVOY, LLCV - MI 344      
989-452 3   543C ONVOY, LLCV - MI 344   2023-09-02   
989-452 4   624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-756 A WHMRMIXIRS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-756 0   543C ONVOY, LLCV - MI 344   2018-10-20   
989-756 1   792K CHARTER IP ENABLED SERVICES, LLC 344   2015-04-23   
989-756 2   0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-756 3   0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-756 4   0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-756 5   0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-756 6   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2015-05-07   
989-756 7   046L CLEAR RATE COMMUNICATIONS, LLC 344   2010-06-20   
989-756 8   543C ONVOY, LLCV - MI 344   2021-06-18   
989-756 9   543C ONVOY, LLCV - MI 344   2021-07-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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