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: 851

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-851 A Harvester MCA4 MO HVTRMO67DSA  9533 SOUTHWESTERN BELL 520      
636-851 0 Harvester MCA4 MO HVTRMO67DSA  9533 SOUTHWESTERN BELL 520      
636-851 1 Harvester MCA4 MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2004-08-02   
636-851 2 Harvester MCA4 MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2004-08-02   
636-851 3 Harvester MCA4 MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2004-08-02   
636-851 4 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2003-07-31   
636-851 5 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2003-07-31   
636-851 6 Harvester MCA4 MO CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2003-07-31   
636-851 7 Harvester MCA4 MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2010-07-23   
636-851 8 Harvester MCA4 MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2012-03-05   
636-851 9 Harvester MCA4 MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-05-29   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.