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: 878 [Rate centres in NPA 878] [Dial plan for NPA 878]

NXX: 673

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
878-673 A Derry PA PITBPAOKXWX  516J TON80 COMMUNICATIONS, LLC 234      
878-673 0 Derry PA PITBPADTXYY  547E ONVOY, LLC - PA 234   2023-10-09   
878-673 2 Derry PA PITBPAIW0MD  318J COMCAST IP PHONE, LLC 234   2022-08-13   
878-673 3 Derry PA PITBPADTXYY  547E ONVOY, LLC - PA 234   2023-03-05   
878-673 8 Derry PA PITBPAOKXWX  516J TON80 COMMUNICATIONS, LLC 234   2022-04-17   
878-673 9 Derry PA PITBPADTXFX  624H ONVOY SPECTRUM, LLC 234   2023-08-27   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.