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.

Pittsburgh Suburban Zone 11, PA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
412-943 6 BTLRPAXBLMD  508J CENTURYLINK COMMUNICATIONS, LLC 234   2015-06-20   
412-943 7 PITEPADT7MD  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 234   2004-12-20   
412-943 8 WASHPAWAHPT  3609 FIBERNET TELECOMMUNICATIONS OF PENNSYLVANIA LLC PA 234   2003-06-29   
412-943 9 PITBPAOKAMD  967E PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 234   2020-03-04   

<< 1 2

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.