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: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-303 A Newaygo MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-303 0 Newaygo MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2011-11-28   
231-303 1 Newaygo MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2014-02-24   
231-303 2 Newaygo MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2012-07-24   
231-303 3 Newaygo MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2015-03-06   
231-303 4 Newaygo MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2015-08-02   
231-303 5 Newaygo MI GDRPMIBL15Z  516C AT&T CORP. 348   2011-08-23   
231-303 6 Newaygo MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2011-07-07   
231-303 7 Newaygo MI   5562 METROPCS, INC. 348   2015-08-29   
231-303 8 Newaygo MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-18   
231-303 9 Newaygo MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-03-18   

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

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