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: 473

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-473 A Antonia MO   7421 AT&T - LOCAL 520   2025-09-19   
636-473 9 Antonia MO   7421 AT&T - LOCAL 520   2025-09-19   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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