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 |
| 312-741
| 2 |
|
829J PAETEC ITEL, LLC |
358 |
|
2017-12-22 |
|
| 312-741
| 3 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-06-01 |
|
| 312-741
| 4 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-06-01 |
|
| 312-741
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
2017-12-22 |
|
| 312-741
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2019-06-20 |
|
| 312-741
| 7 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2018-09-24 |
|
| 312-741
| 8 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2018-10-15 |
|
| 312-741
| 9 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-12-20 |
|
| 312-748
| A |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 312-748
| 0 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 1 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 2 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 3 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 4 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 5 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 6 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 7 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 8 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-748
| 9 |
|
224C ONVOY, LLC |
358 |
|
2023-07-24 |
|
| 312-752
| A |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-752
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-11-20 |
|
| 312-752
| 1 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-06-11 |
|
| 312-752
| 2 |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-06-28 |
|
| 312-752
| 3 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-06-11 |
|
| 312-752
| 4 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-06-11 |
|
| 312-752
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-10-05 |
|
| 312-752
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-10-05 |
|
| 312-752
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-10-05 |
|
| 312-752
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-11-20 |
|
| 312-752
| 9 |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-06-28 |
|
| 312-754
| A |
CHCGILCPDS9 |
138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL |
358 |
|
|
|
| 312-754
| 0 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2013-09-18 |
|
| 312-754
| 1 |
|
224C ONVOY, LLC |
358 |
|
2013-04-26 |
|
| 312-754
| 2 |
|
138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL |
358 |
|
2013-04-25 |
|
| 312-754
| 3 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2013-06-24 |
|
| 312-754
| 4 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2013-08-03 |
|
| 312-754
| 5 |
|
5562 METROPCS, INC. |
358 |
|
2013-04-26 |
|
| 312-754
| 6 |
|
829J PAETEC ITEL, LLC |
358 |
|
2014-01-21 |
|
| 312-754
| 7 |
|
829J PAETEC ITEL, LLC |
358 |
|
2014-01-21 |
|
| 312-754
| 8 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-06 |
|
| 312-754
| 9 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-06 |
|
| 312-757
| A |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 312-757
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-11-14 |
|
| 312-757
| 1 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-06-23 |
|
| 312-757
| 2 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-06-23 |
|
| 312-757
| 3 |
|
224C ONVOY, LLC |
358 |
|
2023-09-15 |
|
| 312-757
| 4 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-06-23 |
|
| 312-757
| 5 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-06-23 |
|
| 312-757
| 6 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2013-06-23 |
|
| 312-757
| 7 |
|
224C ONVOY, LLC |
358 |
|
2013-08-15 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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