Local Calling Guide
Area code/prefix search
Chicago Zone 01-Calumet, IL
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-724
| 8 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-04-08 |
|
| 312-724
| 9 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-04-08 |
|
| 312-725
| A |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 312-725
| 0 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2008-12-15 |
|
| 312-725
| 1 |
CHCGILCLDS7 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2009-08-24 |
|
| 312-725
| 2 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-725
| 3 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-725
| 4 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-725
| 5 |
CHCGILCLDS7 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2009-08-24 |
|
| 312-725
| 6 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-725
| 7 |
CHCGILCLDS7 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2009-08-24 |
|
| 312-725
| 8 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-725
| 9 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-728
| A |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-728
| 0 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-18 |
|
| 312-728
| 1 |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-04-02 |
|
| 312-728
| 2 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 3 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 4 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 5 |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-04-19 |
|
| 312-728
| 6 |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-04-19 |
|
| 312-728
| 7 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 8 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 9 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2018-07-08 |
|
| 312-731
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-731
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2005-08-01 |
|
| 312-731
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2004-02-09 |
|
| 312-731
| 2 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2004-02-09 |
|
| 312-731
| 3 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2004-12-06 |
|
| 312-731
| 4 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2004-12-06 |
|
| 312-731
| 5 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2005-07-11 |
|
| 312-731
| 6 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2005-07-11 |
|
| 312-731
| 7 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2004-07-15 |
|
| 312-731
| 8 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2004-07-15 |
|
| 312-731
| 9 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2005-08-10 |
|
| 312-734
| A |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-734
| 0 |
ELGNILOTGT5 |
5562 METROPCS, INC. |
358 |
|
2015-12-05 |
|
| 312-734
| 1 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2015-11-25 |
|
| 312-734
| 2 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 3 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 4 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 5 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 6 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 7 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 8 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 9 |
ELGNILOTGT5 |
5562 METROPCS, INC. |
358 |
|
2015-12-05 |
|
| 312-736
| A |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-736
| 0 |
CHCGILWUJMD |
073H TELNYX LLC |
358 |
|
2018-07-05 |
|
| 312-736
| 1 |
CHCGILDTKMD |
5447 ACCESS ONE, INC. - IL |
358 |
|
2018-03-16 |
|
| 312-736
| 2 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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