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: 674

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-674 A Antonia MO STLSMOGZWMD  829J PAETEC ITEL, LLC 520      
636-674 1 Antonia MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-07-25   
636-674 2 Antonia MO STLSMOGZWMD  829J PAETEC ITEL, LLC 520      
636-674 3 Antonia MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-05-13   
636-674 4 Antonia MO STLSMOGZ8MD  939H COMMIO, LLC 520   2022-12-08   
636-674 5 Antonia MO OLVEMOAXCA0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520   2006-06-15   
636-674 6 Antonia MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2015-09-20   
636-674 7 Antonia MO WNVLMOXAXBX  508J CENTURYLINK COMMUNICATIONS, LLC 520   2014-07-21   
636-674 8 Antonia MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2004-12-15   
636-674 9 Antonia MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2009-01-17   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.