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.

NPA: 234 [Rate centres in NPA 234] [Dial plan for NPA 234]

NXX: 287

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
234-287 A Youngstown OH YNTWOH78XDX  515J IP HORIZON LLC 322      
234-287 1 Youngstown OH   515J IP HORIZON LLC 322   2020-11-27   
234-287 2 Youngstown OH   464C ONVOY, LLC - OH 322   2020-12-03   
234-287 3 Youngstown OH   464C ONVOY, LLC - OH 322   2020-12-03   
234-287 4 Youngstown OH   464C ONVOY, LLC - OH 322   2020-12-03   
234-287 5 Youngstown OH   464C ONVOY, LLC - OH 322   2020-12-03   
234-287 6 Youngstown OH   024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 322   2022-05-31   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.