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: 547

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-547 A Imperial MO STLSMOBNAMD  4004 GLOBAL CROSSING LOCAL SERVICES, INC. - MO 520      
636-547 0 Imperial MO   093F ONVOY, LLC - MO 520      
636-547 1 Imperial MO   093F ONVOY, LLC - MO 520      
636-547 2 Imperial MO STLSMOBNAMD  4004 GLOBAL CROSSING LOCAL SERVICES, INC. - MO 520      
636-547 3 Imperial MO STLSMOBNAMD  4004 GLOBAL CROSSING LOCAL SERVICES, INC. - MO 520      
636-547 7 Imperial MO STLSMO09XMD  7218 TELEPORT COMMUNICATIONS AMERICA, 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.