Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
219-228 6 Hammond IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2004-10-01   
219-230 7 Hammond IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-08-10   
219-554 5 Hammond IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-07-30   
219-595 1 Highland IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-07-30   
219-595 4 Highland IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2006-12-05   
219-655 2 Whiting IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-07-30   
219-655 4 Whiting IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2004-10-01   
219-961 6 Highland IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2004-10-01   
224-208 0 Bartlett IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2008-01-07   
224-217 5 Des Plaines IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
224-260 8 Glenview IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
224-353 A Roselle IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
224-353 3 Roselle IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
224-517 0 Barrington IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2016-12-16   
224-534 1 Skokie IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-06   
224-535 6 Elgin IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2006-08-18   
224-578 7 Palatine IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
224-612 6 Des Plaines IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2004-10-01   
224-639 4 Northbrook IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2004-10-01   
224-764 A Arlington Heights IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
224-764 2 Arlington Heights IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-09-03   
224-802 9 Dundee IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2015-06-18   
224-856 1 Elgin IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
224-927 0 Northbrook IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
312-212 9 Chicago Zone 01-Wabash IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
312-298 A Chicago Zone 01-Calumet IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-298 0 Chicago Zone 01-Calumet IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 A Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 0 Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 1 Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 2 Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 3 Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 4 Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-363 5 Chicago Zone 01-Monroe IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 A Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 0 Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 1 Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 2 Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 3 Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 4 Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-624 5 Chicago Zone 01-Canal IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-643 A Chicago Zone 01-Superior IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 A Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 0 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 1 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 2 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 3 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 4 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 5 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 6 Chicago Zone 01-Lakeshore IL 8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      

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

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