Local Calling Guide

Area code/prefix search

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

NXX: 558

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-558 A Saginaw MI SGNWMIACBMD  197D VONAGE AMERICA LLC 344      
989-558 0 Saginaw MI   197D VONAGE AMERICA LLC 344   2018-04-30   
989-558 1 Saginaw MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2019-10-28   
989-558 3 Saginaw MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2019-08-10   
989-558 4 Saginaw MI   5562 METROPCS, INC. 344   2023-02-03   
989-558 5 Saginaw MI   5562 METROPCS, INC. 344   2023-02-03   
989-558 6 Saginaw MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2019-06-20   
989-558 8 Saginaw MI   624H ONVOY SPECTRUM, LLC 344   2021-10-22   
989-558 9 Saginaw MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2024-08-10   

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

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