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: NRFDOHXAOMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
234-422 A Twinsburg OH 464C ONVOY, LLC - OH 320   2024-07-05   
234-432 A Aurora OH 464C ONVOY, LLC - OH 320      
234-534 A Northfield OH 464C ONVOY, LLC - OH 320   2024-08-06   
440-698 A Newbury OH 464C ONVOY, LLC - OH 320      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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