Local Calling Guide

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

NXX: 423

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
412-423 A Pittsburgh Suburban Zone 20 PA GIBSPAXGDS1  8597 FIDIUM ENTERPRISE SERVICES, LLC 234      
412-423 0 Pittsburgh Suburban Zone 20 PA GIBSPAXGDS1  8597 FIDIUM ENTERPRISE SERVICES, LLC 234      
412-423 1 Pittsburgh Suburban Zone 20 PA GIBSPAXGDS1  8597 FIDIUM ENTERPRISE SERVICES, LLC 234      
412-423 2 Pittsburgh Suburban Zone 20 PA   829J PAETEC ITEL, LLC 234   2001-12-10   
412-423 3 Pittsburgh Suburban Zone 20 PA   829J PAETEC ITEL, LLC 234   2007-08-23   
412-423 4 Pittsburgh Suburban Zone 20 PA   829J PAETEC ITEL, LLC 234   2007-08-23   
412-423 5 Pittsburgh Suburban Zone 20 PA PITBPADTX2Z  002F BANDWIDTH.COM CLEC, LLC - PA 234   2011-09-26   
412-423 6 Pittsburgh Suburban Zone 20 PA PITBPADTX2Z  002F BANDWIDTH.COM CLEC, LLC - PA 234   2013-11-22   
412-423 7 Pittsburgh Suburban Zone 20 PA PITBPAMADS4  657B CITYNET PENNSYLVANIA, LLC - PA 234   2004-10-10   
412-423 8 Pittsburgh Suburban Zone 20 PA PITBPADTX2Z  002F BANDWIDTH.COM CLEC, LLC - PA 234   2008-12-19   
412-423 9 Pittsburgh Suburban Zone 20 PA PITEPADT7MD  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 234   2001-11-26   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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