Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Chicago Zone 01-Calumet, IL

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-772 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   
312-772 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   
312-773 A CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
312-773 0 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 1 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 2 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 3 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 4 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 5 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 6 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 7 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 8 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-773 9 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2023-07-22   
312-774 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-774 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-774 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-10-03   
312-776 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-776 0 OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-05-27   
312-776 1 OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-05-27   
312-776 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-05-24   
312-776 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-05-24   
312-776 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-03-31   
312-776 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-03-31   
312-776 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-03-31   
312-776 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-03-31   
312-776 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-03-31   
312-776 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-03-31   
312-778 A CHCGIL24DS6  224C ONVOY, LLC 358      
312-778 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-06-29   
312-778 1 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-12   
312-778 2 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-12   
312-778 3 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-12   
312-778 4 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-12   
312-778 5 CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-09   
312-778 6 CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-09   
312-778 7 CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-09   
312-778 8 CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-09   
312-778 9 ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-12   
312-779 A CHCGIL24DS6  224C ONVOY, LLC 358      
312-779 0 CHCGIL24DS6  224C ONVOY, LLC 358   2019-07-12   
312-779 1 CHCGIL24DS6  224C ONVOY, LLC 358   2019-07-12   
312-779 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-07-15   
312-779 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-07-13   
312-779 4 ELGNILOTGT5  5562 METROPCS, INC. 358   2019-07-28   
312-779 5 ELGNILOTGT5  5562 METROPCS, INC. 358   2019-07-28   
312-779 6 CHCGIL24DS6  224C ONVOY, LLC 358   2020-04-04   
312-779 7 ELGNILOTGT5  5562 METROPCS, INC. 358   2019-07-28   
312-779 8 OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-07-13   
312-779 9 ELGNILOTGT5  5562 METROPCS, INC. 358   2019-07-28   
312-783 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-783 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 3 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 7 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-784 A CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
312-784 0 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 1 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 2 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 3 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 4 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 5 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 6 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 7 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 8 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 9 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-785 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-785 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 3 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 7 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-791 A CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 0 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 1 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 2 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 3 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 4 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 5 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 6 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 7 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 8 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 >>

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.