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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-341
| 3 |
Plano |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-08-27 |
|
| 331-341
| 4 |
Plano |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2024-11-25 |
|
| 331-341
| 5 |
Plano |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2024-04-19 |
|
| 331-341
| 6 |
Plano |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-07-29 |
|
| 331-341
| 7 |
Plano |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2024-03-08 |
|
| 331-341
| 8 |
Plano |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2024-03-08 |
|
| 331-341
| 9 |
Plano |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2024-03-08 |
|
| 331-342
| A |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2026-01-22 |
|
| 331-342
| 0 |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2026-01-22 |
|
| 331-342
| 1 |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2026-01-22 |
|
| 331-342
| 2 |
Naperville |
IL |
|
321J HD CARRIER LLC |
358 |
|
2026-03-08 |
|
| 331-342
| 3 |
Naperville |
IL |
|
321J HD CARRIER LLC |
358 |
|
2026-03-08 |
|
| 331-342
| 4 |
Naperville |
IL |
|
321J HD CARRIER LLC |
358 |
|
2026-03-08 |
|
| 331-342
| 5 |
Naperville |
IL |
|
224C ONVOY, LLC |
358 |
|
2026-02-20 |
|
| 331-342
| 8 |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2026-01-23 |
|
| 331-342
| 9 |
Naperville |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2026-01-23 |
|
| 331-343
| A |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 331-343
| 0 |
Downers Grove |
IL |
CHCGILCNHMD |
073H TELNYX LLC |
358 |
|
2023-03-21 |
|
| 331-343
| 1 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 2 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-05-14 |
|
| 331-343
| 3 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-03-20 |
|
| 331-343
| 4 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-03-20 |
|
| 331-343
| 5 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-03-20 |
|
| 331-343
| 6 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 7 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 8 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-343
| 9 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2023-06-13 |
|
| 331-344
| A |
West Chicago |
IL |
|
224C ONVOY, LLC |
358 |
|
2026-03-26 |
|
| 331-344
| 0 |
West Chicago |
IL |
|
224C ONVOY, LLC |
358 |
|
2026-03-26 |
|
| 331-344
| 4 |
West Chicago |
IL |
|
145J TERRA NOVA TELECOM INC. |
358 |
|
2026-03-29 |
|
| 331-345
| A |
Naperville |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-345
| 0 |
Naperville |
IL |
CHCGIL24MMD |
515J IP HORIZON LLC |
358 |
|
2021-06-12 |
|
| 331-345
| 1 |
Naperville |
IL |
CHCGILWUKMD |
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 2 |
Naperville |
IL |
CHCGILWUKMD |
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 3 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2024-10-11 |
|
| 331-345
| 4 |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2022-06-18 |
|
| 331-345
| 5 |
Naperville |
IL |
CHCGILWUKMD |
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 6 |
Naperville |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
2021-01-17 |
|
| 331-345
| 7 |
Naperville |
IL |
CHCGILWUKMD |
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 8 |
Naperville |
IL |
CHCGILWUKMD |
939H COMMIO, LLC |
358 |
|
2021-10-14 |
|
| 331-345
| 9 |
Naperville |
IL |
RVDLILBDAMD |
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 |
CHCGIL24XMD |
495J STRATUS NETWORKS |
358 |
|
2020-10-02 |
|
| 331-348
| 1 |
Elburn |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2020-11-09 |
|
| 331-348
| 2 |
Elburn |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2021-11-26 |
|
| 331-348
| 4 |
Elburn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-08-09 |
|
| 331-348
| 5 |
Elburn |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2021-06-28 |
|
| 331-348
| 6 |
Elburn |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
2019-12-12 |
|
| 331-348
| 7 |
Elburn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-08-09 |
|
| 331-348
| 8 |
Elburn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2020-07-17 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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