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: 450

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-450 A Harvester MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-07-06   
636-450 9 Harvester MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-07-06   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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