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: SPFDILESDS1

Remotes:

Switch Switch name Switch type
SPFDILSLRS0  SPRINGFIELD LAKE RS0  RSS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-263 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-381 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-381 1 Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-524 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-545 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-557 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-558 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-782 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      
217-785 A Springfield IL 9329 ILLINOIS BELL TEL CO 374      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.