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: 260

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-260 A St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-04-29   
636-260 0 St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-04-29   
636-260 1 St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-04-29   
636-260 2 St Charles MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-04-29   
636-260 3 St Charles MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-04-10   
636-260 4 St Charles MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-09-10   
636-260 8 St Charles MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-11   
636-260 9 St Charles MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-11-21   

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

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