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.

Chesterfield, MO

<< 1 2 3 4 5 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
636-536 9 CHFDMO52DSA  9533 SOUTHWESTERN BELL 520      
636-579 A STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-579 0 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-579 1 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-579 2 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2008-02-07   
636-579 3 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2009-05-11   
636-579 4 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2013-05-12   
636-579 5 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2013-05-12   
636-579 6 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-579 7 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2014-03-24   
636-579 8 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2010-10-08   
636-579 9 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-590 A   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
636-590 0 STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2010-07-11   
636-590 1 STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2010-07-11   
636-590 2   093F ONVOY, LLC - MO 520      
636-590 3   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
636-590 4 STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2008-11-02   
636-590 5 STLSMOGZWMD  829J PAETEC ITEL, LLC 520   2010-04-22   
636-590 6 STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-09-17   
636-590 7 STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2013-07-19   
636-590 9   6529 T-MOBILE USA, INC. 520   2025-09-18   
636-675 A STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 0 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 1 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 2 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 3 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 4 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 5 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 6 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 7 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-675 8 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2014-03-24   
636-675 9 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-681 A CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-681 0 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2021-07-26   
636-681 1 CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-681 2 CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2010-01-11   
636-681 3 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-06-19   
636-681 4 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-06-19   
636-681 5 STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2011-01-10   
636-681 6 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-06-19   
636-681 7 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-06-19   
636-681 8 STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2011-01-10   
636-681 9 CRVCMOGMDS0  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520      
636-730 A CHFDMO52DSA  9533 SOUTHWESTERN BELL 520      
636-730 0 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2012-03-22   
636-730 1 STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-04   
636-730 2 STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-04   
636-730 3 CHFDMO52DSA  9533 SOUTHWESTERN BELL 520      
636-730 4 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-12   

<< 1 2 3 4 5 >>

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.