Local Calling Guide

Area code/prefix search

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Dallas City, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-852 A DLCYILXCRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
217-989 A MCMBILXDJMD  593K MCC TELEPHONY LLC 977      
217-989 0 MCMBILXDX9X  224C ONVOY, LLC 977   2020-03-13   
217-989 1 MCMBILXDJMD  593K MCC TELEPHONY LLC 977   2010-07-24   
217-989 2 MCMBILAABMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 977   2021-05-03   
217-989 3 CLCHILXDDS2  342F MTC COMMUNICATIONS, INC. - IL 977   2017-11-27   
217-989 4 MCMBILXDX5X  624H ONVOY SPECTRUM, LLC 977   2023-07-29   
217-989 7 GLBGILXDAMD  508J CENTURYLINK COMMUNICATIONS, LLC 977   2014-07-29   
217-989 8 GLBGILXDXMD  495J STRATUS NETWORKS 977   2021-02-28   
217-989 9 MCMBILXDX9X  224C ONVOY, LLC 977   2021-04-09   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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