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 |
| 331-701
| 1 |
Naperville |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-07-19 |
|
| 331-701
| 2 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2015-05-04 |
|
| 331-701
| 3 |
Naperville |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2015-01-27 |
|
| 331-701
| 4 |
Naperville |
IL |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2015-02-13 |
|
| 331-701
| 5 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2015-05-08 |
|
| 331-701
| 6 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2015-05-20 |
|
| 331-701
| 7 |
Naperville |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2015-04-28 |
|
| 331-701
| 8 |
Naperville |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-07-19 |
|
| 331-701
| 9 |
Naperville |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-07-19 |
|
| 331-702
| A |
Naperville |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
|
|
| 331-702
| 0 |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2014-11-07 |
|
| 331-702
| 1 |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2014-11-07 |
|
| 331-702
| 2 |
Naperville |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2014-06-20 |
|
| 331-702
| 3 |
Naperville |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2013-12-07 |
|
| 331-702
| 4 |
Naperville |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2013-12-07 |
|
| 331-702
| 5 |
Naperville |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2013-12-07 |
|
| 331-702
| 6 |
Naperville |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2014-06-25 |
|
| 331-702
| 7 |
Naperville |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-16 |
|
| 331-702
| 8 |
Naperville |
IL |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-16 |
|
| 331-702
| 9 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2014-12-10 |
|
| 331-703
| A |
West Chicago |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-703
| 0 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2016-01-21 |
|
| 331-703
| 1 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-09-09 |
|
| 331-703
| 2 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-09-09 |
|
| 331-703
| 3 |
West Chicago |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2014-04-17 |
|
| 331-703
| 4 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2014-11-28 |
|
| 331-703
| 5 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2014-11-28 |
|
| 331-703
| 6 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2014-11-28 |
|
| 331-703
| 7 |
West Chicago |
IL |
CHCGILDT8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
2014-02-25 |
|
| 331-703
| 8 |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2016-01-21 |
|
| 331-703
| 9 |
West Chicago |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2013-12-19 |
|
| 331-704
| A |
Kaneville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 331-704
| 0 |
Kaneville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2015-06-20 |
|
| 331-704
| 1 |
Kaneville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-03-11 |
|
| 331-704
| 2 |
Kaneville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-05-01 |
|
| 331-704
| 3 |
Kaneville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-05-01 |
|
| 331-704
| 4 |
Kaneville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2018-09-16 |
|
| 331-704
| 7 |
Kaneville |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2018-09-17 |
|
| 331-704
| 8 |
Kaneville |
IL |
CHCGILWUJMD |
073H TELNYX LLC |
358 |
|
2018-06-28 |
|
| 331-704
| 9 |
Kaneville |
IL |
CHCGIL24XMD |
495J STRATUS NETWORKS |
358 |
|
2020-09-26 |
|
| 331-707
| A |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-707
| 0 |
Aurora |
IL |
CHCGILDTKMD |
5447 ACCESS ONE, INC. - IL |
358 |
|
2017-07-06 |
|
| 331-707
| 2 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-04-18 |
|
| 331-707
| 3 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2017-01-06 |
|
| 331-707
| 4 |
Aurora |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2016-12-09 |
|
| 331-707
| 5 |
Aurora |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2017-09-08 |
|
| 331-707
| 6 |
Aurora |
IL |
WCHCILBFGT0 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2017-08-21 |
|
| 331-707
| 7 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-10-20 |
|
| 331-707
| 8 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-10-20 |
|
| 331-707
| 9 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-10-20 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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