Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 616 [Rate centres in NPA 616] [Dial plan for NPA 616]

NXX: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
616-404 A Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
616-404 0 Casnovia MI   543C ONVOY, LLCV - MI 348   2015-08-02   
616-404 1 Casnovia MI   543C ONVOY, LLCV - MI 348   2016-03-28   
616-404 2 Casnovia MI   543C ONVOY, LLCV - MI 348   2016-03-28   
616-404 3 Casnovia MI   543C ONVOY, LLCV - MI 348   2020-07-07   
616-404 4 Casnovia MI   543C ONVOY, LLCV - MI 348   2020-07-07   
616-404 5 Casnovia MI   543C ONVOY, LLCV - MI 348   2021-03-06   
616-404 6 Casnovia MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-16   
616-404 7 Casnovia MI   543C ONVOY, LLCV - MI 348   2014-11-05   
616-404 8 Casnovia MI   543C ONVOY, LLCV - MI 348   2021-03-06   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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