Local Calling Guide
Area code/prefix search
Chicago Zone 01-Wabash, IL
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-525
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-03-19 |
|
| 312-525
| 2 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 3 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 4 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 5 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 6 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 7 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 8 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-525
| 9 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-533
| A |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 0 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 1 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 2 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2011-02-17 |
|
| 312-533
| 3 |
CHCGILCLDS7 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2010-10-01 |
|
| 312-533
| 4 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2005-04-01 |
|
| 312-533
| 5 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 6 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 7 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 8 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-533
| 9 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-542
| A |
CHCGILWBDS3 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-543
| A |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 312-546
| A |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-546
| 0 |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2010-10-27 |
|
| 312-546
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2004-01-11 |
|
| 312-546
| 3 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2005-04-01 |
|
| 312-546
| 4 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-546
| 5 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-11-06 |
|
| 312-546
| 6 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2005-04-01 |
|
| 312-546
| 7 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2009-04-18 |
|
| 312-546
| 8 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2009-04-18 |
|
| 312-546
| 9 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2009-04-18 |
|
| 312-547
| A |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 312-547
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-01-05 |
|
| 312-547
| 1 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-09-25 |
|
| 312-547
| 2 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 3 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 4 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 5 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 6 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 7 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 8 |
CHCGIL24DS0 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2008-11-01 |
|
| 312-547
| 9 |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 312-550
| A |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-554
| A |
CHCGILWBDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-554
| 0 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2025-12-04 |
|
| 312-554
| 1 |
CHCGILWBDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-554
| 2 |
CHCGILWBDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-554
| 3 |
CHCGILWBDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-554
| 4 |
CHCGILWBDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
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|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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