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: 380

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-380 A Troy MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2024-04-20   
636-380 1 Troy MO WNVLMOXAXXX  093F ONVOY, LLC - MO 520   2024-04-21   
636-380 2 Troy MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-09-01   
636-380 3 Troy MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-04-28   
636-380 4 Troy MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-04-28   
636-380 8 Troy MO WNVLMOXAXXX  093F ONVOY, LLC - MO 520   2024-07-05   
636-380 9 Troy MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2025-10-19   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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