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: CRRLIAAF0MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-520 7 Glenwood IA 6266 UNITED STATES CELLULAR - IA 644      
712-520 8 Glenwood IA 6266 UNITED STATES CELLULAR - IA 644   2020-11-26   
712-524 4 Council Bluffs IA 6266 UNITED STATES CELLULAR - IA 644   2021-01-15   
712-542 0 Clarinda IA 6266 UNITED STATES CELLULAR - IA 644      
712-542 7 Clarinda IA 6266 UNITED STATES CELLULAR - IA 644      
712-563 6 Audubon IA 6266 UNITED STATES CELLULAR - IA 644   2009-04-20   
712-621 A Red Oak IA 6266 UNITED STATES CELLULAR - IA 644      
712-830 A Lidderdale IA 6266 UNITED STATES CELLULAR - IA 644      

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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