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: CNBLIAWADS1

Remotes:

Switch Switch name Switch type
CRSCIACORS1  CRESCENT  RSC 
HMBGIACORS4  HAMBURG  RSC 
MLVRIACORS1  MALVERN  RSC 
NEOLIACORS1  NEOLA  RSC 
UNWDIACORS1  UNDERWOOD  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-322 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-323 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-325 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-326 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-328 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-329 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-352 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-388 A Council Bluffs IA 9631 QWEST CORPORATION 644      
712-396 A Council Bluffs IA 9631 QWEST CORPORATION 644      

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

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