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: OTWAILOTDS0

Remotes:

Switch Switch name Switch type
HDNGILHGRS0  HARDING  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-431 A Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 0 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 1 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 2 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 3 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 4 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 5 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 8 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-431 9 Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-433 A Ottawa IL 9329 ILLINOIS BELL TEL CO 358      
815-434 A Ottawa IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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