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: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-590 A Chesterfield MO STLSMOBNAMD  4004 GLOBAL CROSSING LOCAL SERVICES, INC. - MO 520      
636-590 0 Chesterfield MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520      
636-590 1 Chesterfield MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520      
636-590 2 Chesterfield MO STLSMOBNAMD  4004 GLOBAL CROSSING LOCAL SERVICES, INC. - MO 520      
636-590 3 Chesterfield MO STLSMOBNAMD  4004 GLOBAL CROSSING LOCAL SERVICES, INC. - MO 520      
636-590 4 Chesterfield MO   7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520      
636-590 5 Chesterfield MO   829J PAETEC ITEL, LLC 520      
636-590 6 Chesterfield MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520      
636-590 7 Chesterfield MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.