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: GTCTIAXODS0

Remotes:

Switch Switch name Switch type
ADARIAXORS0  ADAIR  1RE 
BGLYIAXORS0  BAGLEY  1RC 
JAMCIAXORS0  JAMAICA  1RC 
LNDNIAXORS0  LINDEN  1RC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-747 A Guthrie Center IA 1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 632      

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

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