Local Calling Guide
Area code/prefix search
Chicago Zone 01-Lakeshore, IL
1 2 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-228
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 0 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 1 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 2 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2005-12-08 |
|
| 312-233
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 5 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 6 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 7 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-233
| 9 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-240
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-297
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-374
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-374
| 0 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-374
| 1 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2012-12-31 |
|
| 312-374
| 2 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2013-01-04 |
|
| 312-374
| 3 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2012-12-31 |
|
| 312-374
| 4 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2014-01-11 |
|
| 312-374
| 5 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2014-01-12 |
|
| 312-374
| 6 |
|
224C ONVOY, LLC |
358 |
|
2013-12-23 |
|
| 312-374
| 7 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-374
| 8 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2015-01-08 |
|
| 312-374
| 9 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-472
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-472
| 0 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 1 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 2 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 5 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 6 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 7 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 9 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-540
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-552
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-565
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-616
| A |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-650
| A |
CHCGILACGT0 |
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 0 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 1 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 2 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 3 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 4 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 5 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 6 |
|
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
| 312-650
| 7 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2004-11-27 |
|
| 312-650
| 8 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2004-11-27 |
|
1 2 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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