Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 354

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-354 A Harvester MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
636-354 0 Harvester MO STLSMOGZ8MD  939H COMMIO, LLC 520   2021-10-16   
636-354 1 Harvester MO STLSMOGZ8MD  939H COMMIO, LLC 520   2021-10-16   
636-354 2 Harvester MO STLSMOGZ8MD  939H COMMIO, LLC 520   2021-10-16   
636-354 3 Harvester MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-11   
636-354 4 Harvester MO STLSMOGZ8MD  939H COMMIO, LLC 520   2021-10-16   
636-354 5 Harvester MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-02-22   
636-354 6 Harvester MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-04-04   
636-354 7 Harvester MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2023-10-01   
636-354 8 Harvester MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2021-09-30   
636-354 9 Harvester MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2021-09-30   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.