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 |
| 331-979
| 2 |
Elmhurst |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2015-04-17 |
|
| 331-979
| 3 |
Elmhurst |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-15 |
|
| 331-979
| 4 |
Elmhurst |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-15 |
|
| 331-979
| 5 |
Elmhurst |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-15 |
|
| 331-979
| 6 |
Elmhurst |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2016-07-16 |
|
| 331-979
| 7 |
Elmhurst |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2016-04-07 |
|
| 331-979
| 8 |
Elmhurst |
IL |
|
515J IP HORIZON LLC |
358 |
|
2016-08-09 |
|
| 331-979
| 9 |
Elmhurst |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2015-12-12 |
|
| 331-980
| A |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-980
| 0 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-08-14 |
|
| 331-980
| 1 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-08-14 |
|
| 331-980
| 2 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-04-20 |
|
| 331-980
| 3 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-04-20 |
|
| 331-980
| 4 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-04-20 |
|
| 331-980
| 5 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-04-20 |
|
| 331-980
| 6 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-04-20 |
|
| 331-980
| 7 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-12-08 |
|
| 331-980
| 8 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-12-08 |
|
| 331-980
| 9 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-12-08 |
|
| 331-998
| A |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 331-998
| 0 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2015-10-31 |
|
| 331-998
| 1 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2015-11-15 |
|
| 331-998
| 2 |
Downers Grove |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2015-11-01 |
|
| 331-998
| 3 |
Downers Grove |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-11-23 |
|
| 331-998
| 4 |
Downers Grove |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2015-11-28 |
|
| 331-998
| 5 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2016-02-06 |
|
| 331-998
| 6 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-15 |
|
| 331-998
| 7 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-15 |
|
| 331-998
| 8 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2017-09-09 |
|
| 331-998
| 9 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-15 |
|
| 331-999
| A |
Oswego |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 331-999
| 0 |
Oswego |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-06-17 |
|
| 331-999
| 1 |
Oswego |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-09-01 |
|
| 331-999
| 2 |
Oswego |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-02-12 |
|
| 331-999
| 3 |
Oswego |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2012-05-05 |
|
| 331-999
| 4 |
Oswego |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2011-11-10 |
|
| 331-999
| 5 |
Oswego |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-09-13 |
|
| 331-999
| 6 |
Oswego |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2012-09-30 |
|
| 331-999
| 7 |
Oswego |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2012-10-11 |
|
| 331-999
| 8 |
Oswego |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-06-15 |
|
| 331-999
| 9 |
Oswego |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2019-07-14 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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