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 |
| 331-229
| 7 |
Naperville |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2013-02-22 |
|
| 331-229
| 8 |
Naperville |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2013-11-20 |
|
| 331-229
| 9 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-04-18 |
|
| 331-230
| A |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-230
| 0 |
Aurora |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-11-06 |
|
| 331-230
| 1 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2018-08-18 |
|
| 331-230
| 2 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2018-11-10 |
|
| 331-230
| 3 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2018-11-10 |
|
| 331-230
| 4 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2018-11-10 |
|
| 331-230
| 5 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2018-11-10 |
|
| 331-230
| 6 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2018-11-10 |
|
| 331-230
| 7 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2018-11-10 |
|
| 331-230
| 8 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-10-26 |
|
| 331-230
| 9 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2017-06-03 |
|
| 331-231
| A |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 331-231
| 0 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-11-14 |
|
| 331-231
| 1 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-11-14 |
|
| 331-231
| 2 |
Naperville |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2018-10-29 |
|
| 331-231
| 3 |
Naperville |
IL |
CHCGILWUIMD |
197D VONAGE AMERICA LLC |
358 |
|
2018-12-14 |
|
| 331-231
| 4 |
Naperville |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2017-11-17 |
|
| 331-231
| 5 |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2018-08-18 |
|
| 331-231
| 6 |
Naperville |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2017-11-09 |
|
| 331-231
| 7 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2018-07-29 |
|
| 331-231
| 8 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2018-07-29 |
|
| 331-231
| 9 |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-09-28 |
|
| 331-232
| A |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 331-232
| 2 |
West Chicago |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-06-05 |
|
| 331-232
| 3 |
West Chicago |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2021-05-23 |
|
| 331-232
| 4 |
West Chicago |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2021-05-23 |
|
| 331-232
| 5 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2021-10-04 |
|
| 331-232
| 6 |
West Chicago |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-09-07 |
|
| 331-232
| 7 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-09-22 |
|
| 331-232
| 8 |
West Chicago |
IL |
CHCGIL24XMD |
495J STRATUS NETWORKS |
358 |
|
2020-09-26 |
|
| 331-232
| 9 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-09-22 |
|
| 331-233
| A |
Downers Grove |
IL |
CHCGILCNHMD |
073H TELNYX LLC |
358 |
|
|
|
| 331-233
| 0 |
Downers Grove |
IL |
CHCGILCNHMD |
073H TELNYX LLC |
358 |
|
2017-04-27 |
|
| 331-233
| 1 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2017-06-16 |
|
| 331-233
| 2 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-11-06 |
|
| 331-233
| 3 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-11-06 |
|
| 331-233
| 4 |
Downers Grove |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2018-10-18 |
|
| 331-233
| 5 |
Downers Grove |
IL |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2018-11-08 |
|
| 331-233
| 6 |
Downers Grove |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2019-04-18 |
|
| 331-233
| 7 |
Downers Grove |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2017-10-13 |
|
| 331-233
| 8 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-09-09 |
|
| 331-233
| 9 |
Downers Grove |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-08-20 |
|
| 331-234
| A |
Sugar Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 331-234
| 0 |
Sugar Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2013-09-06 |
|
| 331-234
| 1 |
Sugar Grove |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-08-10 |
|
| 331-234
| 2 |
Sugar Grove |
IL |
CHCGILDT8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
2014-07-15 |
|
| 331-234
| 3 |
Sugar Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2014-09-20 |
|
<< 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 >>
Last updated: Tue, 31 Mar 2026 13:56:49 UTC
Sponsored by: FiberConX Communications Ltd.
Like this site? We accept donations via PayPal.