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 |
| 331-319
| 9 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-12-19 |
|
| 331-320
| A |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 0 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 1 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 2 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 3 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 4 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 5 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 6 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-04 |
|
| 331-320
| 7 |
Bartlett |
IL |
|
490J BOOST SUBSCRIBERCO L.L.C. |
358 |
|
2025-11-20 |
|
| 331-320
| 8 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-05-24 |
|
| 331-320
| 9 |
Bartlett |
IL |
|
490J BOOST SUBSCRIBERCO L.L.C. |
358 |
|
2026-01-19 |
|
| 331-321
| A |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-321
| 0 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2017-05-22 |
|
| 331-321
| 1 |
Aurora |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2016-04-18 |
|
| 331-321
| 2 |
Aurora |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2015-09-21 |
|
| 331-321
| 3 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-04-09 |
|
| 331-321
| 4 |
Aurora |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-08 |
|
| 331-321
| 5 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-09-06 |
|
| 331-321
| 6 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-04-09 |
|
| 331-321
| 7 |
Aurora |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-08 |
|
| 331-321
| 8 |
Aurora |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-08 |
|
| 331-321
| 9 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-09-18 |
|
| 331-322
| A |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-322
| 0 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-322
| 1 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-322
| 2 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-322
| 3 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-05-30 |
|
| 331-322
| 4 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-08-03 |
|
| 331-322
| 5 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-08-03 |
|
| 331-322
| 6 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-09-26 |
|
| 331-322
| 7 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-11-20 |
|
| 331-322
| 8 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-11-20 |
|
| 331-322
| 9 |
Lombard |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2024-11-20 |
|
| 331-323
| A |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-323
| 0 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-323
| 1 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-12 |
|
| 331-323
| 8 |
Glen Ellyn |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2024-11-11 |
|
| 331-324
| A |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-05-04 |
|
| 331-324
| 0 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-05-04 |
|
| 331-324
| 1 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-05-04 |
|
| 331-324
| 8 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-06-30 |
|
| 331-324
| 9 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2025-01-06 |
|
| 331-325
| A |
Lemont |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2024-05-24 |
|
| 331-325
| 0 |
Lemont |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2024-05-24 |
|
| 331-325
| 1 |
Lemont |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-06-07 |
|
| 331-325
| 2 |
Lemont |
IL |
CHCGILWUXMD |
490J BOOST SUBSCRIBERCO L.L.C. |
358 |
|
2024-11-21 |
|
| 331-326
| A |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-05-19 |
|
| 331-326
| 0 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-05-19 |
|
| 331-326
| 1 |
Downers Grove |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2024-05-21 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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