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: PSTNIAXO0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-534 A Danville IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-223 A Eldridge IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-308 A Preston IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-486 A Oxford Junction IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-651 A Oxford Junction IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-694 A Goose Lake IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-934 A Miles IA 751F MCC TELEPHONY OF IOWA, LLC - IA 634      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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