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: CDRRIAIC2MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
563-217 3 Waukon IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2012-08-16   
563-277 A Decorah IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635      
563-277 1 Decorah IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-15   
563-387 6 Decorah IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2005-07-24   
563-412 A West Union IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635      
563-412 1 West Union IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-15   
563-538 2 Lansing IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2012-08-16   
563-562 1 Calmar IA 751F MCC TELEPHONY OF IOWA, LLC - IA 635   2010-05-09   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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