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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-640 A Lake Ann MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-640 0 Lake Ann MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-640 1 Lake Ann MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348      
231-640 2 Lake Ann MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-640 3 Lake Ann MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348      
231-640 4 Lake Ann MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-640 5 Lake Ann MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-640 6 Lake Ann MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-640 7 Lake Ann MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-640 8 Lake Ann MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-640 9 Lake Ann MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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