Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Central Lake, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
231-358 A GDRPMIBQDS1  4632 TELNET WORLDWIDE, INC. 348      
231-544 A CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 0 GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2004-10-23   
231-544 1 ANTSMIADPS0  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-544 2 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 3 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 4 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 5 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 6 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 7 GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-16   
231-544 8 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-544 9 CNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-808 A GDRPMIBLX8Z  2550 123 NET, INC. 348      
231-999 A GDRPMIBL04Z  543C ONVOY, LLC - MI 348      
231-999 2   543C ONVOY, LLC - MI 348   2021-03-06   
231-999 3   543C ONVOY, LLC - MI 348   2021-03-06   
231-999 7   508J CENTURYLINK COMMUNICATIONS LLC 348   2015-10-21   
231-999 8 GDRPMIBL04Z  543C ONVOY, LLC - MI 348   2015-10-19   
231-999 9 GDRPMIBL04Z  543C ONVOY, LLC - MI 348   2015-10-19   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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