Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 412 [Rate centres in NPA 412] [Dial plan for NPA 412]

NXX: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
412-336 A Pittsburgh Zone 4 PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 234   2025-04-25   
412-336 2 Pittsburgh Zone 4 PA PITEPADT7MD  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 234      
412-336 3 Pittsburgh Zone 4 PA PITBPADTXYY  547E ONVOY, LLC - PA 234   2017-12-28   
412-336 6 Pittsburgh Zone 4 PA PITBPAWY2MD  6701 AERIAL COMMUNICATIONS, INC. 234   2021-05-10   
412-336 7 Pittsburgh Zone 4 PA PITBPAWY2MD  6701 AERIAL COMMUNICATIONS, INC. 234   2021-05-10   
412-336 8 Pittsburgh Zone 4 PA PITBPADTX2Z  002F BANDWIDTH.COM CLEC, LLC - PA 234   2010-06-24   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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