Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 724 [Rate centres in NPA 724] [Dial plan for NPA 724]

NXX: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
724-404 A Youngwood PA   547E ONVOY, LLC - PA 234   2025-04-15   
724-404 0 Youngwood PA   3806 CORE COMMUNICATIONS, INC. - PA 234   2004-05-01   
724-404 3 Youngwood PA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 234   2006-06-15   
724-404 4 Youngwood PA   145J TERRA NOVA TELECOM INC. 234   2024-12-29   
724-404 6 Youngwood PA   547E ONVOY, LLC - PA 234   2021-02-26   
724-404 7 Youngwood PA   547E ONVOY, LLC - PA 234   2021-02-26   
724-404 8 Youngwood PA   422C ARMSTRONG TELECOMMUNICATIONS, INC. - PA 234   2007-11-03   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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