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: 689

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-689 A Valley Park MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-689 0 Valley Park MO   093F ONVOY, LLC - MO 520   2024-03-02   
636-689 1 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 2 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 3 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 4 Valley Park MO   093F ONVOY, LLC - MO 520   2024-03-02   
636-689 5 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 6 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 7 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 8 Valley Park MO   093F ONVOY, LLC - MO 520   2015-07-31   
636-689 9 Valley Park MO   7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      

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

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