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: 570

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
412-570 A Pittsburgh Zone 1 PA FTHLPA020MD  0051 SHELCOMM 234   2024-02-09   

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

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