Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-579 A Chesterfield MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-579 0 Chesterfield MO   6529 T-MOBILE USA, INC. 520      
636-579 1 Chesterfield MO   6529 T-MOBILE USA, INC. 520      
636-579 2 Chesterfield MO   6529 T-MOBILE USA, INC. 520   2008-02-07   
636-579 3 Chesterfield MO   6529 T-MOBILE USA, INC. 520   2009-05-11   
636-579 4 Chesterfield MO   6529 T-MOBILE USA, INC. 520   2013-05-12   
636-579 5 Chesterfield MO   6529 T-MOBILE USA, INC. 520   2013-05-12   
636-579 6 Chesterfield MO   6529 T-MOBILE USA, INC. 520      
636-579 7 Chesterfield MO   6529 T-MOBILE USA, INC. 520   2014-03-24   
636-579 8 Chesterfield MO   6529 T-MOBILE USA, INC. 520   2010-10-08   
636-579 9 Chesterfield MO   6529 T-MOBILE USA, INC. 520      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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