Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Port Austin, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-242 A   817J INTERACTIVE SERVICES NETWORK, INC. 344      
989-738 A PTASMIXIDS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-738 0 SGNWMIFAXNY  318J COMCAST IP PHONE, LLC 344   2010-11-30   
989-738 5 PTASMIXIDS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-738 6 PTASMIXIDS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-738 7 PTASMIXIDS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-738 8 PTASMIXIDS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 344      
989-768 A SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-768 0 SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-768 1   145J TERRA NOVA TELECOM INC. 344   2025-06-05   
989-768 2 SGNWMIFAXWY  624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-768 3 SGNWMIFAXNX  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2018-10-26   
989-768 4 SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2015-05-06   
989-768 7 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-27   
989-768 8 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-27   
989-768 9 SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2018-10-20   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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