Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 314 [Rate centres in NPA 314] [Dial plan for NPA 314]

NXX: 643

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
314-643 A Ladue MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
314-643 0 Ladue MO   6529 T-MOBILE USA, INC. 520   2011-01-28   
314-643 1 Ladue MO   6529 T-MOBILE USA, INC. 520   2011-01-28   
314-643 2 Ladue MO   6529 T-MOBILE USA, INC. 520   2011-01-28   
314-643 3 Ladue MO   6529 T-MOBILE USA, INC. 520   2011-01-28   
314-643 4 Ladue MO   490J DISH WIRELESS, LLC 520   2025-09-24   
314-643 5 Ladue MO   6529 T-MOBILE USA, INC. 520   2011-05-03   
314-643 6 Ladue MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-05-29   
314-643 7 Ladue MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-05-29   
314-643 8 Ladue MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-05-29   
314-643 9 Ladue MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2013-04-22   

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

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