Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-728 A Sullivan IL SLLVILXCRS2  1015 FRONTIER NORTH, INC. - IL 374      
217-728 0 Sullivan IL   224C ONVOY, LLC 374   2020-10-15   
217-728 1 Sullivan IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 374   2005-02-14   
217-728 2 Sullivan IL   1015 FRONTIER NORTH, INC. - IL 374      
217-728 3 Sullivan IL   1015 FRONTIER NORTH, INC. - IL 374      
217-728 4 Sullivan IL   1015 FRONTIER NORTH, INC. - IL 374      
217-728 5 Sullivan IL   495J STRATUS NETWORKS 374   2021-01-15   
217-728 6 Sullivan IL   224C ONVOY, LLC 374   2020-10-15   
217-728 7 Sullivan IL   1015 FRONTIER NORTH, INC. - IL 374      
217-728 8 Sullivan IL   1015 FRONTIER NORTH, INC. - IL 374      
217-728 9 Sullivan IL   1015 FRONTIER NORTH, INC. - IL 374      

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

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