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: 325

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
412-325 A Pittsburgh Zone 1 PA GIBSPAXGDS1  8597 FIDIUM ENTERPRISE SERVICES, LLC 234      

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

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