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: WDSTILWSDS0

Remotes:

Switch Switch name Switch type
HRVRILHVRS0  HARVARD  RSC 
MRNGILMRRS0  MARENGO  RSC 
UNINILUNRS0  UNION  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-206 A Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 0 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 1 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 2 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 3 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 4 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 5 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 6 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-206 7 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 A Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 0 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 1 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 2 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 3 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 4 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 5 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 6 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-334 8 Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-337 A Woodstock IL 9329 ILLINOIS BELL TEL CO 358      
815-338 A Woodstock IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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