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: DWTTIAXOPS0

Remotes:

Switch Switch name Switch type
CHRLIAXORP0  CHARLOTTE  RP 
CHRLIAXORS0  CHARLOTTE  RLC 
DLMRIAXORP0  DELMAR  RP 
DLMRIAXORS0  DELMAR  1RC 
DWTTIAXORP0    RP 
LWMRIAXORP0  LOW MOOR  RP 
LWMRIAXORS0  LOW MOOR  1RE 
SABLIAXPRP0  SABULA  RP 
SABLIAXPRS0  SABULA  RLC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
563-655 A De Witt IA 1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      

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

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