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: JOLTILJWDS0

Remotes:

Switch Switch name Switch type
BRWDILBRRS0  BRAIDWOOD  RSC 
MNHTILMARS0  MANHATTAN  RSC 
PTVLILPVRS0  PLATTVILLE  RLC 
WLMGILWMRS0  WILMINGTON  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-207 4 Joliet IL 9329 ILLINOIS BELL TEL CO 358   2002-11-01   
815-207 5 Joliet IL 9329 ILLINOIS BELL TEL CO 358   2002-11-01   
815-725 A Joliet West IL 9329 ILLINOIS BELL TEL CO 358      
815-729 A Joliet West IL 9329 ILLINOIS BELL TEL CO 358      
815-730 A Joliet West IL 9329 ILLINOIS BELL TEL CO 358      
815-741 A Joliet West IL 9329 ILLINOIS BELL TEL CO 358      
815-744 A Joliet West IL 9329 ILLINOIS BELL TEL CO 358      
815-773 A Joliet West IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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