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 |
| 312-300
| 8 |
|
224C ONVOY, LLC |
358 |
|
2012-02-21 |
|
| 312-300
| 9 |
|
224C ONVOY, LLC |
358 |
|
2012-02-21 |
|
| 312-312
| A |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 312-312
| 0 |
|
5562 METROPCS, INC. |
358 |
|
2018-05-06 |
|
| 312-312
| 1 |
|
5562 METROPCS, INC. |
358 |
|
2018-05-06 |
|
| 312-312
| 2 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2018-05-04 |
|
| 312-312
| 3 |
|
224C ONVOY, LLC |
358 |
|
2018-03-22 |
|
| 312-312
| 4 |
|
5562 METROPCS, INC. |
358 |
|
2018-05-06 |
|
| 312-312
| 5 |
|
224C ONVOY, LLC |
358 |
|
2018-03-22 |
|
| 312-312
| 6 |
|
5562 METROPCS, INC. |
358 |
|
2018-05-06 |
|
| 312-312
| 7 |
|
224C ONVOY, LLC |
358 |
|
2018-03-22 |
|
| 312-312
| 8 |
|
5562 METROPCS, INC. |
358 |
|
2018-05-06 |
|
| 312-312
| 9 |
|
224C ONVOY, LLC |
358 |
|
2018-03-22 |
|
| 312-313
| A |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 312-313
| 0 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 1 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 2 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 3 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 4 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 5 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 6 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 7 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 8 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-313
| 9 |
|
224C ONVOY, LLC |
358 |
|
2015-01-09 |
|
| 312-319
| A |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-319
| 0 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-06-20 |
|
| 312-319
| 1 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-06-20 |
|
| 312-319
| 2 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-06-20 |
|
| 312-319
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2017-06-19 |
|
| 312-319
| 4 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-06-20 |
|
| 312-319
| 5 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-06-20 |
|
| 312-319
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2017-06-20 |
|
| 312-319
| 7 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2017-06-20 |
|
| 312-319
| 8 |
|
224C ONVOY, LLC |
358 |
|
2017-06-20 |
|
| 312-319
| 9 |
|
515J IP HORIZON LLC |
358 |
|
2017-07-06 |
|
| 312-324
| A |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-324
| 0 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2005-01-30 |
|
| 312-324
| 1 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2002-06-05 |
|
| 312-324
| 2 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2002-06-05 |
|
| 312-324
| 3 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2005-01-30 |
|
| 312-324
| 4 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-08-14 |
|
| 312-324
| 5 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-05-21 |
|
| 312-324
| 6 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-05-21 |
|
| 312-324
| 7 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-05-21 |
|
| 312-324
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2002-06-05 |
|
| 312-324
| 9 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2002-06-05 |
|
| 312-326
| A |
CHCGILCADS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-327
| A |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-328
| A |
CHCGILCADS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-334
| A |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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