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: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
878-433 A Clairton PA PITBPAOKXWX  516J TON80 COMMUNICATIONS, LLC 234      
878-433 0 Clairton PA   073H TELNYX LLC 234   2022-08-29   
878-433 1 Clairton PA   624H ONVOY SPECTRUM, LLC 234   2023-08-27   
878-433 2 Clairton PA   547E ONVOY, LLC - PA 234   2022-12-05   
878-433 6 Clairton PA   516J TON80 COMMUNICATIONS, LLC 234   2022-03-11   
878-433 8 Clairton PA   547E ONVOY, LLC - PA 234   2023-10-09   

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

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