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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
616-420 A Alto MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
616-420 0 Alto MI   543C ONVOY, LLCV - MI 348   2009-03-23   
616-420 1 Alto MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2012-07-06   
616-420 2 Alto MI   543C ONVOY, LLCV - MI 348   2012-05-26   
616-420 3 Alto MI   543C ONVOY, LLCV - MI 348   2012-12-28   
616-420 4 Alto MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2018-10-25   
616-420 5 Alto MI   516C AT&T CORP. 348   2011-08-23   
616-420 6 Alto MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
616-420 7 Alto MI   543C ONVOY, LLCV - MI 348   2016-01-29   
616-420 8 Alto MI   543C ONVOY, LLCV - MI 348   2013-03-19   
616-420 9 Alto MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2016-01-04   

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

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