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: 427

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-427 A St Peters MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-02-21   
636-427 0 St Peters MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2025-03-14   
636-427 9 St Peters MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-02-21   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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