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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
773-354 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-355 A Chicago Zone 03-Kildare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
773-355 0 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-03-26   
773-355 1 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-03-26   
773-355 2 Chicago Zone 03-Kildare IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-07-05   
773-355 3 Chicago Zone 03-Kildare IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-07-05   
773-355 4 Chicago Zone 03-Kildare IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-09-18   
773-355 5 Chicago Zone 03-Kildare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
773-355 6 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-09-13   
773-355 7 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-09-13   
773-355 8 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-02-02   
773-355 9 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-02-02   
773-356 A Chicago Zone 09-South Chicago IL CHCGILSCDS0  9329 ILLINOIS BELL TEL CO 358      
773-357 A Chicago Zone 11-O'Hare IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-357 0 Chicago Zone 11-O'Hare IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-10-14   
773-357 1 Chicago Zone 11-O'Hare IL   145J TERRA NOVA TELECOM INC. 358   2022-05-23   
773-357 2 Chicago Zone 11-O'Hare IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-10-14   
773-357 3 Chicago Zone 11-O'Hare IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-09-12   
773-357 4 Chicago Zone 11-O'Hare IL CHCGILDTKMD  5447 ACCESS ONE, INC. - IL 358   2006-01-20   
773-357 5 Chicago Zone 11-O'Hare IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-357 6 Chicago Zone 11-O'Hare IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-357 7 Chicago Zone 11-O'Hare IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-357 8 Chicago Zone 11-O'Hare IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-05-20   
773-357 9 Chicago Zone 11-O'Hare IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-358 A Chicago Zone 07-Oakland IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-358 0 Chicago Zone 07-Oakland IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2005-06-13   
773-358 1 Chicago Zone 07-Oakland IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-03-13   
773-358 2 Chicago Zone 07-Oakland IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-09-02   
773-358 3 Chicago Zone 07-Oakland IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-09-12   
773-358 4 Chicago Zone 07-Oakland IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-358 5 Chicago Zone 07-Oakland IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2000-10-12   
773-358 6 Chicago Zone 07-Oakland IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-01-18   
773-358 7 Chicago Zone 07-Oakland IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2001-05-01   
773-358 8 Chicago Zone 07-Oakland IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2005-06-13   
773-358 9 Chicago Zone 07-Oakland IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-359 A Chicago Zone 09-South Chicago IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-359 0 Chicago Zone 09-South Chicago IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2000-08-07   
773-359 1 Chicago Zone 09-South Chicago IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-10-16   
773-359 2 Chicago Zone 09-South Chicago IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2008-12-12   
773-359 3 Chicago Zone 09-South Chicago IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
773-359 4 Chicago Zone 09-South Chicago IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2008-12-12   
773-359 5 Chicago Zone 09-South Chicago IL CHCGILSCDS0  9329 ILLINOIS BELL TEL CO 358   2000-07-07   
773-359 6 Chicago Zone 09-South Chicago IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
773-359 7 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-359 8 Chicago Zone 09-South Chicago IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-359 9 Chicago Zone 09-South Chicago IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-360 A Chicago Zone 04-Humboldt IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-360 0 Chicago Zone 04-Humboldt IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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