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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
563-921 0 New Vienna IA 221F ONVOY, LLC - IA 634   2021-03-14   
563-921 6 New Vienna IA 221F ONVOY, LLC - IA 634   2020-06-27   
563-944 4 Lowden IA 221F ONVOY, LLC - IA 634   2021-03-14   
563-944 9 Lowden IA 221F ONVOY, LLC - IA 634   2020-06-27   
563-945 4 Stanwood IA 221F ONVOY, LLC - IA 634   2020-06-27   
563-945 5 Stanwood IA 221F ONVOY, LLC - IA 634   2021-03-14   
563-946 4 Rochester IA 221F ONVOY, LLC - IA 634   2021-03-14   
563-946 5 Rochester IA 221F ONVOY, LLC - IA 634   2020-06-27   
660-688 6 Athens MO 093F ONVOY, LLC - MO 634   2022-02-11   

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

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