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: 660

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-660 A Mayville MI SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-660 0 Mayville MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2008-09-26   
989-660 1 Mayville MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-05-31   
989-660 2 Mayville MI   991E BANDWIDTH.COM CLEC, LLC - MI 344   2012-07-06   
989-660 3 Mayville MI   516C AT&T CORP. 344   2011-09-30   
989-660 4 Mayville MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2013-11-28   
989-660 5 Mayville MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2016-02-04   
989-660 6 Mayville MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2015-04-17   
989-660 7 Mayville MI   508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-05-06   
989-660 8 Mayville MI   543C ONVOY, LLCV - MI 344   2012-10-13   
989-660 9 Mayville MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      

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

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