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: NLBTIAXO2MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-203 A Swisher IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-15   
319-285 A Sharon Center IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-15   
319-312 A Dysart IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-17   
319-459 A North Liberty IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-06   
319-779 A Kalona IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-15   

Last updated: Sun, 31 May 2020 11:59:01 UTC

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