Local Calling Guide
Area code/prefix search
NPA: 312
[Rate centres in NPA 312]
[Dial plan for NPA 312]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-469
| 5 |
Chicago Zone 01-Superior |
IL |
CHCGILCLDS7 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2001-08-16 |
|
| 312-469
| 6 |
Chicago Zone 01-Superior |
IL |
CHCGILCLDS7 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2001-08-16 |
|
| 312-469
| 7 |
Chicago Zone 01-Superior |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-08-28 |
|
| 312-469
| 8 |
Chicago Zone 01-Superior |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-07-01 |
|
| 312-469
| 9 |
Chicago Zone 01-Superior |
IL |
CHCGILMF4MD |
5562 METROPCS, INC. |
358 |
|
2004-10-01 |
|
| 312-470
| A |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 0 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 1 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 2 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 3 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 4 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 5 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 6 |
Chicago Zone 01-Monroe |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2010-11-20 |
|
| 312-470
| 7 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 8 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-470
| 9 |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-471
| A |
Chicago Zone 01-Calumet |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-471
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2015-08-12 |
|
| 312-471
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2015-08-12 |
|
| 312-471
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2015-08-22 |
|
| 312-471
| 3 |
Chicago Zone 01-Calumet |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-08-10 |
|
| 312-471
| 4 |
Chicago Zone 01-Calumet |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-08-10 |
|
| 312-471
| 5 |
Chicago Zone 01-Calumet |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-08-10 |
|
| 312-471
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2015-08-22 |
|
| 312-471
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2015-08-22 |
|
| 312-471
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2015-08-22 |
|
| 312-471
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2015-08-12 |
|
| 312-472
| A |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-472
| 0 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 1 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 2 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 3 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 4 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 5 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 6 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 7 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 8 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-472
| 9 |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2005-12-18 |
|
| 312-473
| A |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
|
|
| 312-473
| 0 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 1 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 2 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 3 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 4 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 5 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 6 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 7 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 8 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-473
| 9 |
Chicago Zone 01-Calumet |
IL |
OKBRILDODS0 |
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2007-01-06 |
|
| 312-474
| A |
Chicago Zone 01-Canal |
IL |
CHCGILCLDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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