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: 743

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-743 A Marion MI MARNMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-743 0 Marion MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-11-21   
231-743 1 Marion MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-11-21   
231-743 2 Marion MI MARNMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-743 3 Marion MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-03-18   
231-743 4 Marion MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2017-08-04   
231-743 5 Marion MI GDRPMIBL15Z  516C AT&T CORP. 348   2011-08-23   
231-743 6 Marion MI MARNMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-743 7 Marion MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-18   
231-743 8 Marion MI GDRQMIBODS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348   2021-07-07   
231-743 9 Marion MI MARNMIMNRSA  9323 MICHIGAN BELL TEL CO 348      

Last updated: Wed, 01 Jan 2025 02:39:49 UTC

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