Local Calling Guide
Area code/prefix search
NPA: 331
[Rate centres in NPA 331]
[Dial plan for NPA 331]
NXX: 318
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-318
| A |
Lemont |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 331-318
| 0 |
Lemont |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-16 |
|
| 331-318
| 1 |
Lemont |
IL |
|
515J IP HORIZON LLC |
358 |
|
2013-09-30 |
|
| 331-318
| 2 |
Lemont |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-16 |
|
| 331-318
| 3 |
Lemont |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2014-02-08 |
|
| 331-318
| 4 |
Lemont |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-16 |
|
| 331-318
| 5 |
Lemont |
IL |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2014-03-22 |
|
| 331-318
| 6 |
Lemont |
IL |
CHCGILCPDS9 |
138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL |
358 |
|
2014-02-27 |
|
| 331-318
| 7 |
Lemont |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2014-07-28 |
|
| 331-318
| 8 |
Lemont |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2014-08-14 |
|
| 331-318
| 9 |
Lemont |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-11-21 |
|
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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