Local Calling Guide
Area code/prefix search
NPA: 312
[Rate centres in NPA 312]
[Dial plan for NPA 312]
NXX: 523
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-523
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUX1X |
4717 PAETEC COMMUNICATIONS, INC. - IL |
358 |
|
2005-06-24 |
|
| 312-523
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2010-11-05 |
|
| 312-523
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUX1X |
4717 PAETEC COMMUNICATIONS, INC. - IL |
358 |
|
2005-06-24 |
|
| 312-523
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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