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: 564

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-564 A Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 0 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 1 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 2 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 3 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2008-05-11   
231-564 4 Kalkaska MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2017-12-03   
231-564 5 Kalkaska MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2018-10-26   
231-564 6 Kalkaska MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-564 7 Kalkaska MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-564 8 Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2019-04-30   
231-564 9 Kalkaska MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   

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

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