Local Calling Guide
Area code/prefix search
NPA: 331
[Rate centres in NPA 331]
[Dial plan for NPA 331]
NXX: 253
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-253
| A |
Lemont |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-253
| 0 |
Lemont |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2014-12-30 |
|
| 331-253
| 1 |
Lemont |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2014-12-30 |
|
| 331-253
| 2 |
Lemont |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2015-07-02 |
|
| 331-253
| 3 |
Lemont |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2015-10-30 |
|
| 331-253
| 4 |
Lemont |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-04-16 |
|
| 331-253
| 5 |
Lemont |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-04-16 |
|
| 331-253
| 6 |
Lemont |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2016-07-16 |
|
| 331-253
| 7 |
Lemont |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-08-07 |
|
| 331-253
| 8 |
Lemont |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-12-25 |
|
| 331-253
| 9 |
Lemont |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-12-11 |
|
Last updated: Wed, 18 Jun 2025 02:30:00 UTC
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