Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 803

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-803 A Morley MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-803 1 Morley MI   691A DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI 348   2014-07-15   
231-803 3 Morley MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-803 4 Morley MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-17   
231-803 5 Morley MI   516C AT&T CORP. 348   2011-08-23   
231-803 6 Morley MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-803 7 Morley MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-18   

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

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