Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 878 [Rate centres in NPA 878] [Dial plan for NPA 878]

NXX: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
878-299 A Indiana PA   547E ONVOY, LLC - PA 234   2026-01-11   
878-299 0 Indiana PA   547E ONVOY, LLC - PA 234   2026-01-11   
878-299 1 Indiana PA   547E ONVOY, LLC - PA 234   2026-01-12   
878-299 9 Indiana PA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 234   2026-03-22   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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