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 0 Youngstown OH YNTWOH78ZMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 322   2023-05-19   
234-287 1 Youngstown OH   515J IP HORIZON LLC 322   2020-11-27   
234-287 2 Youngstown OH YNTWOH78X9X  464C ONVOY, LLC - OH 322   2020-12-03   
234-287 3 Youngstown OH YNTWOH78X9X  464C ONVOY, LLC - OH 322   2020-12-03   
234-287 4 Youngstown OH YNTWOH78X9X  464C ONVOY, LLC - OH 322   2020-12-03   
234-287 5 Youngstown OH YNTWOH78X9X  464C ONVOY, LLC - OH 322   2020-12-03   
234-287 6 Youngstown OH YNTWOH78MMD  024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 322   2022-05-31   
234-287 7 Youngstown OH YNTWOH78ZMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 322   2024-07-12   
234-287 8 Youngstown OH YNTWOH78X9X  464C ONVOY, LLC - OH 322   2023-07-22   
234-287 9 Youngstown OH YNTWOH74UMD  073H TELNYX LLC 322   2023-09-09   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.