Local Calling Guide

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NPA: 773 [Rate centres in NPA 773] [Dial plan for NPA 773]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-433 9 Chicago Zone 02-Edgewater IL   224C ONVOY, LLC 358   2026-01-05   
773-434 A Chicago Zone 08-Prospect IL CHCGILPRDS0  9329 ILLINOIS BELL TEL CO 358      
773-435 A Chicago Zone 04-Humboldt IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-435 0 Chicago Zone 04-Humboldt IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-435 1 Chicago Zone 04-Humboldt IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-435 2 Chicago Zone 04-Humboldt IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-435 3 Chicago Zone 04-Humboldt IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-435 4 Chicago Zone 04-Humboldt IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2022-04-05   
773-435 5 Chicago Zone 04-Humboldt IL CHCGILDTKMD  5447 ACCESS ONE, INC. - IL 358   2006-01-20   
773-435 6 Chicago Zone 04-Humboldt IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-09-29   
773-435 7 Chicago Zone 04-Humboldt IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-435 8 Chicago Zone 04-Humboldt IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-07-15   
773-435 9 Chicago Zone 04-Humboldt IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-436 A Chicago Zone 08-Prospect IL CHCGILPRDS0  9329 ILLINOIS BELL TEL CO 358      
773-437 A Chicago Zone 09-South Chicago IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 0 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-437 1 Chicago Zone 09-South Chicago IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 2 Chicago Zone 09-South Chicago IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 3 Chicago Zone 09-South Chicago IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-09-15   
773-437 4 Chicago Zone 09-South Chicago IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-09-15   
773-437 5 Chicago Zone 09-South Chicago IL CHCGILCLXOX  516C AT&T CORP. 358   2006-05-02   
773-437 6 Chicago Zone 09-South Chicago IL DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2007-05-13   
773-437 7 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-437 8 Chicago Zone 09-South Chicago IL DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2007-05-13   
773-437 9 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-438 A Chicago Zone 01-Calumet IL LBRDILGOAMD  6630 SPOK, INC. 358      
773-439 A Chicago Zone 03-Newcastle IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
773-439 0 Chicago Zone 03-Newcastle IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-10-11   
773-439 1 Chicago Zone 03-Newcastle IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2003-12-27   
773-439 2 Chicago Zone 03-Newcastle IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2003-12-27   
773-439 3 Chicago Zone 03-Newcastle IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
773-439 4 Chicago Zone 03-Newcastle IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
773-439 5 Chicago Zone 03-Newcastle IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2003-12-27   
773-439 6 Chicago Zone 03-Newcastle IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2003-12-27   
773-439 7 Chicago Zone 03-Newcastle IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2003-12-27   
773-439 8 Chicago Zone 03-Newcastle IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2003-12-27   
773-439 9 Chicago Zone 03-Newcastle IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-10-11   
773-440 A Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358      
773-440 0 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 1 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 2 Chicago Zone 10-Beverly IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-03-25   
773-440 3 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 4 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 5 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 6 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 7 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 8 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-440 9 Chicago Zone 10-Beverly IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-03-25   
773-441 A Chicago Zone 03-Kildare IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
773-441 0 Chicago Zone 03-Kildare IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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