Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 445 [Rate centres in NPA 445] [Dial plan for NPA 445]

NXX: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
445-337 A Philadelphia Zone 2 PA   547E ONVOY, LLC - PA 228   2025-12-26   
445-337 0 Philadelphia Zone 2 PA   547E ONVOY, LLC - PA 228   2025-12-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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