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: 464

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-464 A Freesoil MI FONTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-464 0 Freesoil MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348   2005-09-02   
231-464 1 Freesoil MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
231-464 2 Freesoil MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2021-06-10   
231-464 3 Freesoil MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2017-10-04   
231-464 5 Freesoil MI FONTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-464 6 Freesoil MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-11-08   
231-464 7 Freesoil MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-09-04   
231-464 8 Freesoil MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   
231-464 9 Freesoil MI   145J TERRA NOVA TELECOM INC. 348   2022-01-04   

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

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