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 |
| 331-850
| 9 |
Big Rock |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2021-10-01 |
|
| 331-866
| A |
Wheaton |
IL |
CHCGILWUTMD |
516J TON80 COMMUNICATIONS, LLC |
358 |
|
|
|
| 331-866
| 0 |
Wheaton |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2022-11-17 |
|
| 331-866
| 1 |
Wheaton |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2022-11-17 |
|
| 331-866
| 2 |
Wheaton |
IL |
CHCGILWUTMD |
516J TON80 COMMUNICATIONS, LLC |
358 |
|
2022-03-15 |
|
| 331-866
| 3 |
Wheaton |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-12-12 |
|
| 331-866
| 4 |
Wheaton |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-12-12 |
|
| 331-866
| 5 |
Wheaton |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2022-12-12 |
|
| 331-866
| 6 |
Wheaton |
IL |
|
490J BOOST SUBSCRIBERCO L.L.C. |
358 |
|
2026-04-21 |
|
| 331-866
| 7 |
Wheaton |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2022-11-17 |
|
| 331-866
| 8 |
Wheaton |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2022-11-17 |
|
| 331-866
| 9 |
Wheaton |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2022-11-17 |
|
| 331-867
| A |
Yorkville |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-867
| 0 |
Yorkville |
IL |
|
495J STRATUS NETWORKS |
358 |
|
2020-10-03 |
|
| 331-867
| 1 |
Yorkville |
IL |
|
515J IP HORIZON LLC |
358 |
|
2021-06-27 |
|
| 331-867
| 3 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-05-14 |
|
| 331-867
| 4 |
Yorkville |
IL |
CHCGILCNHMD |
073H TELNYX LLC |
358 |
|
2023-05-28 |
|
| 331-867
| 5 |
Yorkville |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
2020-09-11 |
|
| 331-867
| 6 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2020-09-12 |
|
| 331-867
| 7 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2020-10-15 |
|
| 331-867
| 8 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2020-09-12 |
|
| 331-867
| 9 |
Yorkville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2020-10-15 |
|
| 331-871
| A |
West Chicago |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 331-871
| 0 |
West Chicago |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2016-07-16 |
|
| 331-871
| 1 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2016-09-22 |
|
| 331-871
| 2 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2016-12-06 |
|
| 331-871
| 3 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2016-12-06 |
|
| 331-871
| 4 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-04-28 |
|
| 331-871
| 5 |
West Chicago |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2017-01-22 |
|
| 331-871
| 6 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-04-28 |
|
| 331-871
| 7 |
West Chicago |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-04-14 |
|
| 331-871
| 8 |
West Chicago |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-04-14 |
|
| 331-871
| 9 |
West Chicago |
IL |
CHCGILWUJMD |
073H TELNYX LLC |
358 |
|
2017-04-24 |
|
| 331-888
| A |
Warrenville |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
|
|
| 331-888
| 0 |
Warrenville |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2013-04-27 |
|
| 331-888
| 1 |
Warrenville |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2013-04-27 |
|
| 331-888
| 2 |
Warrenville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-10 |
|
| 331-888
| 3 |
Warrenville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2014-02-10 |
|
| 331-888
| 5 |
Warrenville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-03-14 |
|
| 331-888
| 6 |
Warrenville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-03-14 |
|
| 331-888
| 7 |
Warrenville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-05-01 |
|
| 331-888
| 8 |
Warrenville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-05-01 |
|
| 331-888
| 9 |
Warrenville |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2015-06-05 |
|
| 331-899
| A |
Lombard |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-899
| 0 |
Lombard |
IL |
CHCGIL24MMD |
515J IP HORIZON LLC |
358 |
|
2021-06-14 |
|
| 331-899
| 1 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2021-08-17 |
|
| 331-899
| 2 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-03-01 |
|
| 331-899
| 3 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-03-01 |
|
| 331-899
| 4 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-03-01 |
|
| 331-899
| 5 |
Lombard |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2021-03-01 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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