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: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-623 A Quarryville PA HRBGPAHAX9Z  547E ONVOY, LLC - PA 226      
223-623 0 Quarryville PA   073H TELNYX LLC 226   2022-07-24   
223-623 1 Quarryville PA   624H ONVOY SPECTRUM, LLC 226   2024-10-25   
223-623 2 Quarryville PA   547E ONVOY, LLC - PA 226   2021-10-01   
223-623 3 Quarryville PA   547E ONVOY, LLC - PA 226   2021-10-01   
223-623 5 Quarryville PA   547E ONVOY, LLC - PA 226   2023-11-04   
223-623 6 Quarryville PA   547E ONVOY, LLC - PA 226   2023-11-04   
223-623 7 Quarryville PA   547E ONVOY, LLC - PA 226   2023-11-04   
223-623 8 Quarryville PA   547E ONVOY, LLC - PA 226   2023-11-04   
223-623 9 Quarryville PA   547E ONVOY, LLC - PA 226   2023-11-04   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.