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: 409

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-409 A O'Fallon MO OVLDMOBKDS0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520      
636-409 0 O'Fallon MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2017-04-30   
636-409 1 O'Fallon MO OVLDMOBKDS0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520   2016-02-19   
636-409 2 O'Fallon MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2017-04-30   
636-409 3 O'Fallon MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2017-02-14   
636-409 4 O'Fallon MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2017-04-30   
636-409 5 O'Fallon MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-11-24   
636-409 6 O'Fallon MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-11-24   
636-409 7 O'Fallon MO WNVLMOXAVMD  6529 T-MOBILE USA, INC. 520   2020-09-19   
636-409 8 O'Fallon MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2017-11-24   
636-409 9 O'Fallon MO WNVLMOXAXGX  5562 METROPCS, INC. 520   2021-05-08   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.