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: 355

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-355 A Dry Run PA CHBGPAXCXDX  547E ONVOY, LLC - PA 226   2024-01-22   
223-355 0 Dry Run PA HRBGPAGU2MD  073H TELNYX LLC 226   2022-06-27   
223-355 1 Dry Run PA HRBGPAHAXTX  318J COMCAST IP PHONE, LLC 226   2023-07-02   
223-355 2 Dry Run PA HRBGPAGU7MD  516J TON80 COMMUNICATIONS, LLC 226   2021-06-14   
223-355 3 Dry Run PA   547E ONVOY, LLC - PA 226   2021-06-13   
223-355 4 Dry Run PA CHBGPAXCXDX  547E ONVOY, LLC - PA 226   2023-04-24   
223-355 5 Dry Run PA CHBGPAXCXDX  547E ONVOY, LLC - PA 226   2021-06-14   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.