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 |
| 312-414
| 3 |
|
829J PAETEC ITEL, LLC |
358 |
|
2016-10-04 |
|
| 312-414
| 4 |
|
5562 METROPCS, INC. |
358 |
|
2016-10-04 |
|
| 312-414
| 5 |
|
5562 METROPCS, INC. |
358 |
|
2016-10-04 |
|
| 312-414
| 6 |
|
5562 METROPCS, INC. |
358 |
|
2016-10-04 |
|
| 312-414
| 7 |
|
5562 METROPCS, INC. |
358 |
|
2016-10-04 |
|
| 312-414
| 8 |
|
5562 METROPCS, INC. |
358 |
|
2016-10-04 |
|
| 312-414
| 9 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2016-10-11 |
|
| 312-423
| A |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 0 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2022-06-16 |
|
| 312-423
| 1 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 2 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 3 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 4 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 5 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 6 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 7 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 8 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-423
| 9 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| A |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 0 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 1 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 2 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2002-06-05 |
|
| 312-429
| 4 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 5 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 6 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 7 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-429
| 8 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-429
| 9 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-434
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-434
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 4 |
|
5562 METROPCS, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 5 |
|
5562 METROPCS, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 6 |
|
5562 METROPCS, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 7 |
|
5562 METROPCS, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-22 |
|
| 312-434
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-22 |
|
| 312-437
| A |
ELGNILOTGT5 |
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-437
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-437
| 2 |
|
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 3 |
|
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 4 |
|
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 5 |
|
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 6 |
|
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 7 |
|
5562 METROPCS, INC. |
358 |
|
|
|
| 312-437
| 8 |
|
5562 METROPCS, INC. |
358 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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