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 |
| 312-288
| 4 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-288
| 5 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2010-07-08 |
|
| 312-288
| 6 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2010-07-08 |
|
| 312-288
| 7 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-288
| 8 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2008-06-27 |
|
| 312-288
| 9 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2010-07-08 |
|
| 312-289
| A |
LBRDILGOAMD |
6630 USA MOBILITY WIRELESS, INC. |
358 |
|
|
|
| 312-290
| A |
LBRDILGOAMD |
6630 USA MOBILITY WIRELESS, INC. |
358 |
|
|
|
| 312-292
| A |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 312-292
| 0 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-07-16 |
|
| 312-292
| 1 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-07-16 |
|
| 312-292
| 2 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2011-11-28 |
|
| 312-292
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2011-11-28 |
|
| 312-292
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2011-11-28 |
|
| 312-292
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
2011-11-05 |
|
| 312-292
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-04 |
|
| 312-292
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-04 |
|
| 312-292
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-04 |
|
| 312-292
| 9 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-11-28 |
|
| 312-296
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-296
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-298
| A |
CHCGILACGT0 |
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-298
| 0 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-298
| 1 |
|
829J PAETEC ITEL, LLC |
358 |
|
2009-01-28 |
|
| 312-298
| 2 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 5 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 6 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 7 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2001-06-12 |
|
| 312-298
| 9 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-02-25 |
|
| 312-300
| A |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-300
| 0 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2018-10-25 |
|
| 312-300
| 1 |
|
224C ONVOY, LLC |
358 |
|
2012-02-21 |
|
| 312-300
| 2 |
|
224C ONVOY, LLC |
358 |
|
2012-02-21 |
|
| 312-300
| 3 |
|
224C ONVOY, LLC |
358 |
|
2012-02-21 |
|
| 312-300
| 4 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-02-25 |
|
| 312-300
| 5 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-02-25 |
|
| 312-300
| 6 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-02-25 |
|
| 312-300
| 7 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-02-25 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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