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: 430

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-430 A Foristell MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2025-06-28   
636-430 1 Foristell MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2026-07-16   
636-430 9 Foristell MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2025-06-28   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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