Local Calling Guide
Area code/prefix search
NPA: 331
[Rate centres in NPA 331]
[Dial plan for NPA 331]
<< 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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-343
| 6 |
Downers Grove |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 7 |
Downers Grove |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 8 |
Downers Grove |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 9 |
Downers Grove |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-345
| A |
Naperville |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-345
| 0 |
Naperville |
IL |
|
515J IP HORIZON LLC |
358 |
|
2021-06-12 |
|
| 331-345
| 1 |
Naperville |
IL |
|
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 2 |
Naperville |
IL |
|
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 3 |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2024-10-11 |
|
| 331-345
| 4 |
Naperville |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2022-06-18 |
|
| 331-345
| 5 |
Naperville |
IL |
|
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 6 |
Naperville |
IL |
|
965H FRACTEL, LLC |
358 |
|
2021-01-17 |
|
| 331-345
| 7 |
Naperville |
IL |
|
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 8 |
Naperville |
IL |
|
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 9 |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-01-10 |
|
| 331-348
| A |
Elburn |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-348
| 0 |
Elburn |
IL |
|
495J STRATUS NETWORKS |
358 |
|
2020-10-02 |
|
| 331-348
| 1 |
Elburn |
IL |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2020-11-09 |
|
| 331-348
| 2 |
Elburn |
IL |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2021-11-26 |
|
| 331-348
| 4 |
Elburn |
IL |
|
224C ONVOY, LLC |
358 |
|
2021-08-09 |
|
| 331-348
| 5 |
Elburn |
IL |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2021-06-28 |
|
| 331-348
| 6 |
Elburn |
IL |
|
965H FRACTEL, LLC |
358 |
|
2019-12-12 |
|
| 331-348
| 7 |
Elburn |
IL |
|
224C ONVOY, LLC |
358 |
|
2021-08-09 |
|
| 331-348
| 8 |
Elburn |
IL |
|
224C ONVOY, LLC |
358 |
|
2020-07-17 |
|
| 331-348
| 9 |
Elburn |
IL |
|
224C ONVOY, LLC |
358 |
|
2020-07-17 |
|
| 331-356
| A |
Bartlett |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-356
| 0 |
Bartlett |
IL |
|
515J IP HORIZON LLC |
358 |
|
2021-06-13 |
|
| 331-356
| 1 |
Bartlett |
IL |
|
197D VONAGE AMERICA LLC |
358 |
|
2020-10-15 |
|
| 331-356
| 2 |
Bartlett |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2021-07-24 |
|
| 331-356
| 3 |
Bartlett |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2021-07-24 |
|
| 331-356
| 4 |
Bartlett |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2021-07-24 |
|
| 331-356
| 5 |
Bartlett |
IL |
|
197D VONAGE AMERICA LLC |
358 |
|
2020-10-15 |
|
| 331-356
| 6 |
Bartlett |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2021-07-24 |
|
| 331-356
| 7 |
Bartlett |
IL |
|
965H FRACTEL, LLC |
358 |
|
2019-12-10 |
|
| 331-356
| 8 |
Bartlett |
IL |
|
965H FRACTEL, LLC |
358 |
|
2019-12-10 |
|
| 331-356
| 9 |
Bartlett |
IL |
|
965H FRACTEL, LLC |
358 |
|
2020-08-07 |
|
| 331-373
| A |
Oswego |
IL |
CHCGILWUTMD |
516J TON80 COMMUNICATIONS, LLC |
358 |
|
|
|
| 331-373
| 0 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2024-03-01 |
|
| 331-373
| 1 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2024-03-01 |
|
| 331-373
| 2 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2024-03-01 |
|
| 331-373
| 3 |
Oswego |
IL |
|
516J TON80 COMMUNICATIONS, LLC |
358 |
|
2022-04-29 |
|
| 331-373
| 4 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2024-04-05 |
|
| 331-373
| 5 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-373
| 6 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-373
| 7 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-373
| 8 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-373
| 9 |
Oswego |
IL |
|
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-385
| A |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 331-385
| 0 |
Aurora |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2017-01-06 |
|
| 331-385
| 1 |
Aurora |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2017-01-06 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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