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: PRTNILXADS0

Remotes:

Switch Switch name Switch type
MNLSILXARS0  MANLIUS  GTR 
OHIOILXARS0  OHIO  GTR 
SPVYILXARS0  SPRING VALLEY  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-872 A Princeton IL 1015 FRONTIER NORTH, INC. - IL 368      
815-875 A Princeton IL 1015 FRONTIER NORTH, INC. - IL 368      
815-876 A Princeton IL 1015 FRONTIER NORTH, INC. - IL 368      

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

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