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.

OCN: 0118 PORT BYRON TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
315-365 A Savannah NY SVNHNYXA0MD  136      
315-365 2 Savannah NY SVNHNYXA0MD  136      
315-365 3 Savannah NY SVNHNYXA0MD  136      
315-365 6 Savannah NY SVNHNYXA0MD  136      
315-776 A Port Byron NY PTBYNYXAGT0  136      
315-776 0 Port Byron NY PTBYNYXAGT0  136      
315-776 4 Port Byron NY PTBYNYXAGT0  136      
315-776 5 Port Byron NY PTBYNYXAGT0  136      
315-776 6 Port Byron NY PTBYNYXAGT0  136      
315-776 8 Port Byron NY PTBYNYXAGT0  136      
315-776 9 Port Byron NY PTBYNYXAGT0  136      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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