Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: PITBPADTXFX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
412-550 A Pittsburgh Zone 1 PA 624H ONVOY SPECTRUM, LLC 234      
412-791 A Pittsburgh Zone 1 PA 624H ONVOY SPECTRUM, LLC 234      
878-255 A Aliquippa PA 624H ONVOY SPECTRUM, LLC 234      
878-301 A Smock PA 624H ONVOY SPECTRUM, LLC 234      
878-329 A Smithfield (Fayette) PA 624H ONVOY SPECTRUM, LLC 234      
878-489 A Harrison City PA 624H ONVOY SPECTRUM, LLC 234      
878-522 A Youngwood PA 624H ONVOY SPECTRUM, LLC 234      
878-587 A Enon Valley PA 624H ONVOY SPECTRUM, LLC 234      
878-707 A Marion Center PA 624H ONVOY SPECTRUM, LLC 234      
878-744 A McClellandtown PA 624H ONVOY SPECTRUM, LLC 234      
878-780 A Clymer PA 624H ONVOY SPECTRUM, LLC 234      
878-808 A Fairchance PA 624H ONVOY SPECTRUM, LLC 234      
878-840 A New Salem PA 624H ONVOY SPECTRUM, LLC 234      
878-868 A New Florence PA 624H ONVOY SPECTRUM, LLC 234      
878-878 A New Bedford PA 624H ONVOY SPECTRUM, LLC 234      
878-988 A Point Marion PA 624H ONVOY SPECTRUM, LLC 234      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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