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: 386

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-386 A Northport MI NPRTMIMNRSA  9323 AMERITECH MICHIGAN 348      
231-386 0 Northport MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-24   
231-386 1 Northport MI   351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-386 2 Northport MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2016-11-18   
231-386 3 Northport MI   516C AT&T CORP. 348   2013-11-08   
231-386 5 Northport MI   9323 AMERITECH MICHIGAN 348      
231-386 6 Northport MI   543C ONVOY, LLC - MI 348   2013-03-18   
231-386 7 Northport MI   9323 AMERITECH MICHIGAN 348      
231-386 8 Northport MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2015-09-18   
231-386 9 Northport MI   9323 AMERITECH MICHIGAN 348      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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