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: CNCNOHWSXAZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
513-663 8 Hamilton OH 321J HD CARRIER LLC 922   2020-05-22   
513-993 A Cincinnati OH 321J HD CARRIER LLC 922      
513-993 9 Cincinnati OH 321J HD CARRIER LLC 922   2019-02-10   

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

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