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 |
| 312-730
| 1 |
Chicago Zone 01-Wabash |
IL |
CHCGILCLDSC |
7421 AT&T - LOCAL |
358 |
|
|
|
| 312-730
| 2 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2007-07-27 |
|
| 312-730
| 3 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-08-23 |
|
| 312-730
| 4 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-08-23 |
|
| 312-730
| 5 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-08-23 |
|
| 312-730
| 6 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-08-23 |
|
| 312-730
| 7 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-08-23 |
|
| 312-730
| 8 |
Chicago Zone 01-Wabash |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2005-03-19 |
|
| 312-730
| 9 |
Chicago Zone 01-Wabash |
IL |
CHCGILCLDSC |
7421 AT&T - LOCAL |
358 |
|
|
|
| 312-731
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-731
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2005-08-01 |
|
| 312-731
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-02-09 |
|
| 312-731
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-02-09 |
|
| 312-731
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-12-06 |
|
| 312-731
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-12-06 |
|
| 312-731
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2005-07-11 |
|
| 312-731
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2005-07-11 |
|
| 312-731
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-07-15 |
|
| 312-731
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2004-07-15 |
|
| 312-731
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2005-08-10 |
|
| 312-732
| A |
Chicago Zone 01-Wabash |
IL |
CHCGILWBDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-733
| A |
Chicago Zone 01-Monroe |
IL |
CHCGILMODS1 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-734
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-734
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METROPCS, INC. |
358 |
|
2015-12-05 |
|
| 312-734
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2015-11-25 |
|
| 312-734
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-11-01 |
|
| 312-734
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METROPCS, INC. |
358 |
|
2015-12-05 |
|
| 312-735
| A |
Chicago Zone 04-Humboldt |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 0 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 1 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 2 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 3 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 4 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 5 |
Chicago Zone 04-Humboldt |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 6 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 7 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 8 |
Chicago Zone 04-Humboldt |
IL |
CHCGILMF3MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-735
| 9 |
Chicago Zone 04-Humboldt |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-736
| A |
Chicago Zone 01-Calumet |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-736
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUJMD |
073H TELNYX LLC |
358 |
|
2018-07-05 |
|
| 312-736
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILDTDS3 |
5447 ACCESS ONE, INC. - IL |
358 |
|
2018-03-16 |
|
| 312-736
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2018-07-26 |
|
| 312-736
| 3 |
Chicago Zone 01-Calumet |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2018-08-17 |
|
| 312-736
| 4 |
Chicago Zone 01-Calumet |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2018-08-17 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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