Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-637 A Palo MI PALOMIXGRS0  0695 FRONTIER NORTH, INC. - MI 344      
989-637 0 Palo MI SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-05-31   
989-637 1 Palo MI OWTPMI022MD  792K CHARTER IP ENABLED SERVICES, LLC 344   2008-08-27   
989-637 2 Palo MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2017-05-26   
989-637 4 Palo MI PALOMIXGRS0  0695 FRONTIER NORTH, INC. - MI 344      
989-637 5 Palo MI ALMAMIXGOMD  624H ONVOY SPECTRUM, LLC 344   2023-05-30   
989-637 6 Palo MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2013-04-05   
989-637 7 Palo MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-20   
989-637 8 Palo MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-20   
989-637 9 Palo MI SGNWMIFAXJX  991E BANDWIDTH.COM CLEC, LLC - MI 344   2020-09-26   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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