Local Calling Guide

Area code/prefix search

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

NXX: 206

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-206 A St Charles MO STLSMO09WMD  516C AT&T CORP. 520      
636-206 0 St Charles MO   6529 T-MOBILE USA, INC. 520   2014-07-25   
636-206 1 St Charles MO   6529 T-MOBILE USA, INC. 520   2017-01-13   
636-206 2 St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-09-28   
636-206 3 St Charles MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2015-05-14   
636-206 4 St Charles MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2015-05-14   
636-206 5 St Charles MO STLSMO09WMD  516C AT&T CORP. 520   2014-04-27   
636-206 6 St Charles MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2015-05-14   
636-206 7 St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-09-28   
636-206 8 St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2017-07-03   
636-206 9 St Charles MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2014-06-01   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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