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: RCFRILRTDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-489 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-490 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-720 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-961 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-962 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-963 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-964 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-965 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-966 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-967 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-968 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-969 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-971 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-972 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      
815-987 A Rockford IL 9329 ILLINOIS BELL TEL CO 360      

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

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