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 |
| 312-477
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
2011-02-10 |
|
| 312-477
| 6 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2011-02-18 |
|
| 312-477
| 7 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2011-03-04 |
|
| 312-477
| 8 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2011-03-04 |
|
| 312-477
| 9 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2011-03-15 |
|
| 312-478
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-478
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-478
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-05-18 |
|
| 312-479
| A |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-479
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-09-24 |
|
| 312-479
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2003-09-07 |
|
| 312-479
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2003-09-07 |
|
| 312-479
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2003-09-07 |
|
| 312-479
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2003-09-23 |
|
| 312-479
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2003-09-30 |
|
| 312-479
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-09-24 |
|
| 312-479
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-09-24 |
|
| 312-479
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-09-24 |
|
| 312-479
| 9 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-481
| A |
ELGNILOTGT5 |
5562 METROPCS, INC. |
358 |
|
|
|
| 312-481
| 0 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-28 |
|
| 312-481
| 1 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-28 |
|
| 312-481
| 2 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-28 |
|
| 312-481
| 3 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-28 |
|
| 312-481
| 4 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-29 |
|
| 312-481
| 5 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-29 |
|
| 312-481
| 6 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
| 312-481
| 7 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
| 312-481
| 8 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
| 312-481
| 9 |
|
5562 METROPCS, INC. |
358 |
|
2017-08-28 |
|
| 312-483
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-483
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-483
| 1 |
|
829J PAETEC ITEL, LLC |
358 |
|
2014-10-08 |
|
| 312-483
| 2 |
|
829J PAETEC ITEL, LLC |
358 |
|
2014-10-08 |
|
| 312-483
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-483
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-483
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-483
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-483
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-483
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-483
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-06 |
|
| 312-486
| A |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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