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: 412 [Rate centres in NPA 412] [Dial plan for NPA 412]

NXX: 205

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
412-205 A Pittsburgh Zone 5 PA PITBPAMADS0  7315 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 234      
412-205 0 Pittsburgh Zone 5 PA   547E ONVOY, LLC - PA 234   2024-07-05   
412-205 1 Pittsburgh Zone 5 PA   7315 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 234      
412-205 3 Pittsburgh Zone 5 PA   318J COMCAST IP PHONE, LLC 234      
412-205 5 Pittsburgh Zone 5 PA   829J PAETEC ITEL, LLC 234   2001-12-10   
412-205 6 Pittsburgh Zone 5 PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 234   2008-05-16   
412-205 8 Pittsburgh Zone 5 PA   002F BANDWIDTH.COM CLEC, LLC - PA 234   2011-09-26   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.