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: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-204 A Warrenton MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
636-204 0 Warrenton MO   093F ONVOY, LLC - MO 520   2021-12-05   
636-204 1 Warrenton MO   093F ONVOY, LLC - MO 520   2021-12-05   
636-204 2 Warrenton MO   093F ONVOY, LLC - MO 520   2021-10-09   
636-204 3 Warrenton MO   093F ONVOY, LLC - MO 520   2021-10-09   
636-204 4 Warrenton MO   093F ONVOY, LLC - MO 520   2021-08-16   
636-204 5 Warrenton MO   093F ONVOY, LLC - MO 520   2021-08-16   
636-204 6 Warrenton MO   093F ONVOY, LLC - MO 520   2021-11-27   
636-204 7 Warrenton MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-04-30   
636-204 8 Warrenton MO   093F ONVOY, LLC - MO 520   2021-11-27   
636-204 9 Warrenton MO   6529 T-MOBILE USA, INC. 520   2022-01-19   

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

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