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.

Switch: RDFDIAXOPS0

Remotes:

Switch Switch name Switch type
DESTIAXPRP0  DE SOTO  RP 
DESTIAXPRS0  DESOTO  GTR 
DXTRIAXORP0  DEXTER  RP 
DXTRIAXORS0  DEXTER  GTR 
RDFDIAXORP0    RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
515-526 A Redfield IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 632      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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