Local Calling Guide

Area code/prefix search

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

NXX: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-475 A Manton MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-475 0 Manton MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-09-18   
231-475 2 Manton MI   145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-475 5 Manton MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-11-05   
231-475 7 Manton MI GDRPMIBL15Z  516C AT&T CORP. 348   2023-09-25   
231-475 8 Manton MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2023-10-28   
231-475 9 Manton MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2022-01-13   

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

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