Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 554A SOCKET TELECOM, LLC - MO

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
573-447 6 Columbia MO   521   2012-08-12   
573-447 7 Columbia MO   521   2011-05-14   
573-447 8 Columbia MO   521   2011-05-14   
573-507 A Columbia MO CLMAMOXAQMD  521      
573-507 4 Columbia MO   521   2018-12-22   
573-507 5 Columbia MO   521   2018-12-22   
573-554 5 Columbia MO   521   2013-09-20   
573-607 A Columbia MO CLMAMOXAQMD  521      
573-607 1 Columbia MO   521   2014-11-01   
573-607 2 Columbia MO   521   2014-11-01   
573-607 3 Columbia MO   521   2016-04-24   
573-657 3 Ashland MO   521   2004-09-19   
573-687 7 Sturgeon MO   521   2004-09-19   
573-696 6 Hallsville MO   521   2004-09-19   
573-777 A Columbia MO CLMAMOXAQMD  521      
573-777 1 Columbia MO   521   2003-08-04   
573-777 3 Columbia MO   521   2009-09-13   
573-777 4 Columbia MO   521   2010-08-13   
573-777 5 Columbia MO   521   2010-04-05   
573-777 6 Columbia MO   521   2008-02-15   
573-777 7 Columbia MO   521   2006-02-12   
573-777 8 Columbia MO   521   2007-06-04   
573-777 9 Columbia MO   521   2009-02-12   
573-982 A Centralia MO CLMAMOXAQMD  521      
573-982 1 Centralia MO   521   2003-08-04   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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