Local Calling Guide

Area code/prefix search

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Chicago Zone 01-Calumet, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-929 4 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-12-18   
312-929 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-11-01   
312-929 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-27   
312-929 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-02-08   
312-929 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-02-25   
312-929 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-27   
312-933 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-933 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-934 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-934 0 CHCGIL24DS6  224C ONVOY, LLC 358   2015-12-18   
312-934 1 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-12-05   
312-934 2 CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358   2015-03-09   
312-934 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-937 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-937 0 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 1 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 2 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 3 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-07-22   
312-937 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-07-22   
312-937 6 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-07-22   
312-937 7 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-07-22   
312-937 8 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-07-22   
312-937 9 ELGNILOTGT5  5562 METROPCS, INC. 358   2014-11-15   
312-940 A CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-940 0 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 1 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 2 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 3 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 4 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 5 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 6 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 7 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 8 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 9 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-947 A CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-947 0 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 1 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 2 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 3 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 4 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 5 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 6 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 7 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 8 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-947 9 CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358   2010-12-18   
312-948 A CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
312-948 0 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
312-948 1 CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358   2002-06-03   
312-948 2 CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358   2002-06-03   
312-948 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-06-02   
312-948 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-06-03   
312-948 5 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
312-948 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-06-03   
312-948 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-06-03   
312-948 8 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2001-01-18   
312-948 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-08-06   
312-949 A CHCGILCADS1  9329 ILLINOIS BELL TEL CO 358      
312-956 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-956 0 ELGNILOTGT5  5562 METROPCS, INC. 358   2014-11-15   
312-956 1 ELGNILOTGT5  5562 METROPCS, INC. 358   2014-11-15   
312-956 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 3 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 7 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-962 A   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 0   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 1   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 2   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 3   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 4   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 5   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 6   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 7   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 8   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-962 9 ELGNILOTGT5  5562 METROPCS, INC. 358   2014-07-21   
312-964 A CHCGIL24DS6  224C ONVOY, LLC 358      
312-964 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-01-17   
312-964 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-01-17   
312-964 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-01-17   
312-964 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2015-09-09   

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Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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