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 0 Harvester MO   490J BOOST SUBSCRIBERCO L.L.C. 520   2025-09-11   
636-450 6 Harvester MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-09-17   
636-450 7 Harvester MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-09-17   
636-450 8 Harvester MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-07-11   
636-450 9 Harvester MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-07-06   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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