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: 685

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-685 A Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 0 Harvester MCA4 MO OVLDMOBKDS0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520   2015-07-27   
636-685 1 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 2 Harvester MCA4 MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-03-10   
636-685 3 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 4 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 5 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 6 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 7 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 8 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-685 9 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.