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: SPFDILESDS2

Remotes:

Switch Switch name Switch type
ROCHILRCRS0  ROCHESTER  RSC 
RVTNILRVRS0  RIVERTON  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-467 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-492 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-522 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-523 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-525 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-527 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-528 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-535 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-541 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-544 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-588 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-744 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-747 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-753 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-757 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-761 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-788 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-789 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-814 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      

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

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