Local Calling Guide

Area code/prefix search

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

NXX: 377

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-377 A Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 0 Clam River MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2004-10-22   
231-377 1 Clam River MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2008-12-23   
231-377 2 Clam River MI ANTSMIADPS0  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-377 3 Clam River MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2015-11-05   
231-377 4 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 5 Clam River MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-16   
231-377 6 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 7 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 8 Clam River MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-04-01   
231-377 9 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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