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.
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Switch: DVNPIA80DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
563-279 A Davenport IA 423H AIRUS, INC - IA 634      
563-279 1 Davenport IA 423H AIRUS, INC - IA 634   2019-12-21   
563-279 9 Davenport IA 423H AIRUS, INC - IA 634   2021-10-21   

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

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