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: 436

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-436 A Mackinaw City MI MCCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-436 0 Mackinaw City MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2005-02-11   
231-436 1 Mackinaw City MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-17   
231-436 2 Mackinaw City MI GDRPMIBL54Z  0975 LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI 348   2004-02-10   
231-436 3 Mackinaw City MI   145J TERRA NOVA TELECOM INC. 348   2021-01-19   
231-436 4 Mackinaw City MI MCCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-436 5 Mackinaw City MI MCCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-436 6 Mackinaw City MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2008-05-15   
231-436 7 Mackinaw City MI MCCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-436 8 Mackinaw City MI MCCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-436 9 Mackinaw City MI MCCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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