Local Calling Guide

Area code/prefix search

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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 819

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-819 A Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-819 0 Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2014-11-13   
231-819 1 Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2014-11-13   
231-819 2 Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-22   
231-819 3 Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-22   
231-819 4 Tustin MI   279B CLEAR RATE COMMUNICATIONS, INC. - MI 348   2016-08-31   
231-819 5 Tustin MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2016-12-11   
231-819 6 Tustin MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2017-10-05   
231-819 7 Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2014-11-05   
231-819 8 Tustin MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
231-819 9 Tustin MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-01-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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