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: 899

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-899 A Portage des Sioux MCA3 MO PRSXMO68RS0  9533 SOUTHWESTERN BELL 520      
636-899 0 Portage des Sioux MCA3 MO PRSXMO68RS0  9533 SOUTHWESTERN BELL 520      
636-899 1 Portage des Sioux MCA3 MO PRSXMO68RS0  9533 SOUTHWESTERN BELL 520      
636-899 9 Portage des Sioux MCA3 MO   965H FRACTEL, LLC 520   2020-09-24   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.