Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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New Boston, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-587 A NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 0   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 1   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 2   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 3   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 4   495J STRATUS NETWORKS 634   2020-12-17   
309-587 5   224C ONVOY, LLC 634   2020-04-29   
309-587 6   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 634   2016-10-31   
309-587 7   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 8   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 9   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-905 A DVNPIADTXQX  224C ONVOY, LLC 634      
309-905 5   224C ONVOY, LLC 634   2021-12-08   

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

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