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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-900 A Washington MO   093F ONVOY, LLC MO 520      
636-900 0 Washington MO   093F ONVOY, LLC MO 520   2015-12-14   
636-900 1 Washington MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2016-01-22   
636-900 2 Washington MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2016-01-22   
636-900 3 Washington MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2020-02-21   
636-900 5 Washington MO   7432 MCI WORLDCOM COMMUNICATIONS, INC - MO 520   2019-09-02   
636-900 6 Washington MO   7432 MCI WORLDCOM COMMUNICATIONS, INC - MO 520   2019-09-02   
636-900 7 Washington MO   093F ONVOY, LLC MO 520   2016-02-01   
636-900 8 Washington MO   093F ONVOY, LLC MO 520   2015-12-14   
636-900 9 Washington MO   5607 CHARTER FIBERLINK, LLC - MO 520   2015-12-15   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.