Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-593 A SHRRILXDDS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-602 A DVNPIADTXQX  224C ONVOY, LLC 634      
309-602 0 HMPNILXDAMD  495J STRATUS NETWORKS 634   2020-10-14   
309-602 1 DVNPIADTXQX  224C ONVOY, LLC 634   2010-07-31   
309-602 2 DVNPIADTXQX  224C ONVOY, LLC 634   2021-04-05   
309-602 6 DVNPIADTXQX  224C ONVOY, LLC 634   2020-04-29   
309-602 7 RCISILRIX0X  508J CENTURYLINK COMMUNICATIONS, LLC 634   2016-10-14   
309-720 A RCISILRIWMD  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 634      
309-720 0   145J TERRA NOVA TELECOM INC. 634   2025-07-10   
309-720 3 RCISILRIWMD  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 634   2010-04-15   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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