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 |
| 312-725
| 7 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2009-08-24 |
|
| 312-725
| 8 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-09-06 |
|
| 312-725
| 9 |
|
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 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-18 |
|
| 312-728
| 1 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-04-02 |
|
| 312-728
| 2 |
|
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 3 |
|
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 4 |
|
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 5 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-04-19 |
|
| 312-728
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-04-19 |
|
| 312-728
| 7 |
|
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 8 |
|
224C ONVOY, LLC |
358 |
|
2018-07-12 |
|
| 312-728
| 9 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2018-07-08 |
|
| 312-731
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-731
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2005-08-01 |
|
| 312-731
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-02-09 |
|
| 312-731
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-02-09 |
|
| 312-731
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-12-06 |
|
| 312-731
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-12-06 |
|
| 312-731
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2005-07-11 |
|
| 312-731
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2005-07-11 |
|
| 312-731
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-07-15 |
|
| 312-731
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-07-15 |
|
| 312-731
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2005-08-10 |
|
| 312-734
| A |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-734
| 0 |
|
5562 METROPCS, INC. |
358 |
|
2015-12-05 |
|
| 312-734
| 1 |
|
224C ONVOY, LLC |
358 |
|
2015-11-25 |
|
| 312-734
| 2 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 3 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 4 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 5 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 7 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 8 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 9 |
|
5562 METROPCS, INC. |
358 |
|
2015-12-05 |
|
| 312-736
| A |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-736
| 0 |
|
073H TELNYX LLC |
358 |
|
2018-07-05 |
|
| 312-736
| 1 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2018-03-16 |
|
| 312-736
| 2 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
| 312-736
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2018-08-17 |
|
| 312-736
| 4 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2018-08-17 |
|
| 312-736
| 5 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2017-12-22 |
|
| 312-736
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2017-12-22 |
|
| 312-736
| 7 |
|
073H TELNYX LLC |
358 |
|
2018-11-14 |
|
| 312-736
| 8 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
| 312-736
| 9 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2019-02-16 |
|
| 312-741
| A |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2024-12-09 |
|
| 312-741
| 0 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-06-01 |
|
| 312-741
| 1 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-06-01 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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