Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 223 [Rate centres in NPA 223] [Dial plan for NPA 223]

NXX: 392

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-392 A Hummelstown PA   547E ONVOY, LLC - PA 226   2026-06-05   
223-392 0 Hummelstown PA   547E ONVOY, LLC - PA 226   2026-06-05   

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

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