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: FRPTILXAMMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
779-327 A Warren IL 224C ONVOY, LLC 360      
779-328 A Hanover IL 224C ONVOY, LLC 360      
779-332 A Durand IL 224C ONVOY, LLC 360      
779-343 A German Valley IL 224C ONVOY, LLC 360      
779-344 A Seward IL 224C ONVOY, LLC 360      
779-347 A Winslow IL 224C ONVOY, LLC 360      
779-710 A Rockford IL 224C ONVOY, LLC 360      
779-729 A Lena IL 224C ONVOY, LLC 360      

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

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