Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Irving, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-533 A IRNGILXCRS0  1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 0   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 3   197H COMPUTER TECHNIQUES, INC. - IL 976   2023-02-25   
217-533 4   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 5   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 6   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 7   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 8   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-533 9   1037 ILLINOIS CONSOLIDATED TEL. CO. 976      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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