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: 223 [Rate centres in NPA 223] [Dial plan for NPA 223]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-357 A York PA   547E ONVOY, LLC - PA 226   2024-03-09   
223-357 0 York PA   547E ONVOY, LLC - PA 226   2024-03-09   
223-357 1 York PA   547E ONVOY, LLC - PA 226   2024-03-10   
223-357 2 York PA   547E ONVOY, LLC - PA 226   2024-04-12   
223-357 8 York PA   547E ONVOY, LLC - PA 226   2024-04-20   
223-357 9 York PA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 226   2024-04-06   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.