Local Calling Guide
Area code/prefix search
NPA: 312
[Rate centres in NPA 312]
[Dial plan for NPA 312]
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NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
312-638
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILCPDS9 |
138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL |
358 |
|
2015-04-24 |
|
312-638
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-638
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-639
| A |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
312-639
| 0 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 1 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 2 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 3 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 4 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 5 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 6 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 7 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 8 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-639
| 9 |
Chicago Zone 01-Calumet |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-12-03 |
|
312-640
| A |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS2 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
312-641
| A |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
312-642
| A |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS2 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
312-643
| A |
Chicago Zone 01-Superior |
IL |
CHCGILACGT0 |
8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL |
358 |
|
|
|
312-644
| A |
Chicago Zone 01-Illinois Dearborn |
IL |
CHCGILIDDS2 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
312-645
| A |
Chicago Zone 01-Illinois Dearborn |
IL |
CHCGILIDDS2 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
312-646
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
|
|
312-646
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-04 |
|
312-646
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-01 |
|
312-646
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-01 |
|
312-646
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-01 |
|
312-646
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-01 |
|
312-646
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-01 |
|
312-646
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUX1X |
4717 PAETEC COMMUNICATIONS, INC. - IL |
358 |
|
2008-02-05 |
|
312-646
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUX1X |
4717 PAETEC COMMUNICATIONS, INC. - IL |
358 |
|
2008-02-05 |
|
312-646
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2008-06-27 |
|
312-646
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2008-06-27 |
|
312-647
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
312-647
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-08-19 |
|
312-647
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-08-19 |
|
312-647
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2013-07-16 |
|
312-647
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-08-19 |
|
312-647
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-07-15 |
|
312-647
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-07-15 |
|
312-647
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-07-15 |
|
312-647
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-07-15 |
|
312-647
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-07-15 |
|
312-647
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2013-07-15 |
|
312-648
| A |
Chicago Zone 01-Canal |
IL |
CHCGILCLDS3 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
312-648
| 0 |
Chicago Zone 01-Canal |
IL |
CHCGILCLDS3 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
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Last updated: Fri, 22 Mar 2024 03:02:44 UTC
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