Local Calling Guide
Area code/prefix search
NPA: 331
[Rate centres in NPA 331]
[Dial plan for NPA 331]
NXX: 257
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-257
| A |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 331-257
| 0 |
Aurora |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2020-04-11 |
|
| 331-257
| 1 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2020-08-22 |
|
| 331-257
| 2 |
Aurora |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-06-29 |
|
| 331-257
| 3 |
Aurora |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-06-29 |
|
| 331-257
| 4 |
Aurora |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-06-29 |
|
| 331-257
| 5 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2020-10-04 |
|
| 331-257
| 6 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2020-10-04 |
|
| 331-257
| 7 |
Aurora |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-01-14 |
|
| 331-257
| 8 |
Aurora |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2020-04-17 |
|
| 331-257
| 9 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2020-03-02 |
|
Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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