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: 829

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-829 A Tustin MI TUSTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-829 0 Tustin MI   543C ONVOY, LLCV - MI 348   2012-06-01   
231-829 1 Tustin MI   3535 ACD TELECOM, INC. - MI 348   2005-02-18   
231-829 2 Tustin MI   516C AT&T CORP. 348   2011-08-23   
231-829 3 Tustin MI   9323 MICHIGAN BELL TEL CO 348      
231-829 4 Tustin MI   145J TERRA NOVA TELECOM INC. 348   2024-11-15   
231-829 5 Tustin MI   145J TERRA NOVA TELECOM INC. 348   2021-01-19   
231-829 6 Tustin MI   829J PAETEC ITEL, LLC 348   2004-02-12   
231-829 7 Tustin MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2005-04-01   
231-829 8 Tustin MI   624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-829 9 Tustin MI   9323 MICHIGAN BELL TEL CO 348      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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