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 |
| 331-281
| 5 |
Naperville |
IL |
NPVLILNEDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-24 |
|
| 331-281
| 6 |
Naperville |
IL |
NPVLILNEDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-24 |
|
| 331-281
| 7 |
Naperville |
IL |
NPVLILNEDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-24 |
|
| 331-281
| 8 |
Naperville |
IL |
NPVLILNEDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-24 |
|
| 331-281
| 9 |
Naperville |
IL |
NPVLILNEDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-24 |
|
| 331-282
| A |
Hinsdale |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 331-282
| 0 |
Hinsdale |
IL |
CHCGILWUSMD |
145J TERRA NOVA TELECOM INC. |
358 |
|
2024-02-14 |
|
| 331-282
| 1 |
Hinsdale |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2022-03-18 |
|
| 331-282
| 2 |
Hinsdale |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-02-11 |
|
| 331-282
| 3 |
Hinsdale |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-02-11 |
|
| 331-282
| 4 |
Hinsdale |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-02-11 |
|
| 331-282
| 5 |
Hinsdale |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2022-02-12 |
|
| 331-282
| 6 |
Hinsdale |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2022-02-12 |
|
| 331-282
| 7 |
Hinsdale |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-08-22 |
|
| 331-282
| 8 |
Hinsdale |
IL |
CHCGILCNHMD |
073H TELNYX LLC |
358 |
|
2022-07-23 |
|
| 331-282
| 9 |
Hinsdale |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-07-06 |
|
| 331-283
| A |
Geneva |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-283
| 0 |
Geneva |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-03-09 |
|
| 331-283
| 1 |
Geneva |
IL |
|
224C ONVOY, LLC |
358 |
|
2025-09-07 |
|
| 331-283
| 2 |
Geneva |
IL |
|
224C ONVOY, LLC |
358 |
|
2025-10-26 |
|
| 331-283
| 3 |
Geneva |
IL |
CHCGILWUSMD |
145J TERRA NOVA TELECOM INC. |
358 |
|
2024-05-26 |
|
| 331-283
| 4 |
Geneva |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-12-02 |
|
| 331-283
| 5 |
Geneva |
IL |
|
224C ONVOY, LLC |
358 |
|
2026-01-05 |
|
| 331-283
| 6 |
Geneva |
IL |
|
224C ONVOY, LLC |
358 |
|
2026-02-20 |
|
| 331-283
| 9 |
Geneva |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2022-04-24 |
|
| 331-284
| A |
Bartlett |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-284
| 0 |
Bartlett |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2022-10-01 |
|
| 331-284
| 1 |
Bartlett |
IL |
CHCGILWUXMD |
490J BOOST SUBSCRIBERCO L.L.C. |
358 |
|
2023-05-25 |
|
| 331-284
| 2 |
Bartlett |
IL |
|
490J BOOST SUBSCRIBERCO L.L.C. |
358 |
|
2025-08-23 |
|
| 331-284
| 3 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-284
| 4 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-284
| 5 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-284
| 6 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-284
| 7 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
| 331-284
| 9 |
Bartlett |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2022-05-02 |
|
| 331-285
| A |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 331-285
| 0 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-07-03 |
|
| 331-285
| 1 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-07-03 |
|
| 331-285
| 2 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-07-03 |
|
| 331-285
| 3 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-07-03 |
|
| 331-285
| 4 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-07-03 |
|
| 331-285
| 5 |
Naperville |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-07-04 |
|
| 331-285
| 6 |
Naperville |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2022-07-04 |
|
| 331-285
| 7 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-08-06 |
|
| 331-285
| 8 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-08-06 |
|
| 331-285
| 9 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-08-06 |
|
| 331-286
| A |
Geneva |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 331-286
| 0 |
Geneva |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-09-17 |
|
| 331-286
| 1 |
Geneva |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-09-17 |
|
| 331-286
| 2 |
Geneva |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-08-12 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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