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: RCFRILRTXQY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
608-596 8 North Apple River WI 792K CHARTER IP ENABLED SERVICES, LLC 360   2026-09-06   
608-677 9 North Warren WI 792K CHARTER IP ENABLED SERVICES, LLC 360   2024-06-30   
815-240 A Rock Cut IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2025-01-16   
815-240 1 Rock Cut IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2010-12-02   
815-270 A Roscoe IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2025-01-16   
815-270 0 Roscoe IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2007-06-18   
815-270 1 Roscoe IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2010-08-05   
815-904 7 Rockford IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2007-06-18   
815-957 0 Rockton IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2007-06-18   
815-957 1 Rockton IL 792K CHARTER IP ENABLED SERVICES, LLC 360   2012-09-03   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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