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.

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 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 1 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 2 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 3 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 4 HMPNILXDAMD  495J STRATUS NETWORKS 634   2020-12-17   
309-587 5 DVNPIADTXQX  224C ONVOY, LLC 634   2020-04-29   
309-587 6 RCISILRIX0X  508J CENTURYLINK COMMUNICATIONS, LLC 634   2016-10-31   
309-587 7 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 8 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-587 9 NBTNILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-905 A DVNPIADTXQX  224C ONVOY, LLC 634      
309-905 5 DVNPIADTXQX  224C ONVOY, LLC 634   2021-12-08   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.