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: YNTWOH78XDX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
234-287 A Youngstown OH 515J IP HORIZON LLC 322      
234-396 A Lisbon (Columbiana) OH 515J IP HORIZON LLC 322   2024-03-31   
234-434 0 Youngstown OH 515J IP HORIZON LLC 322   2024-04-26   
234-434 1 Youngstown OH 515J IP HORIZON LLC 322   2024-04-26   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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