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 47 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-462
| 6 |
Lombard |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2026-04-20 |
|
| 331-462
| 7 |
Lombard |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2025-11-21 |
|
| 331-462
| 8 |
Lombard |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2025-07-06 |
|
| 331-462
| 9 |
Lombard |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2025-04-06 |
|
| 331-465
| A |
West Chicago |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 331-465
| 0 |
West Chicago |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2009-04-11 |
|
| 331-465
| 1 |
West Chicago |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-05 |
|
| 331-465
| 2 |
West Chicago |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-09-10 |
|
| 331-465
| 3 |
West Chicago |
IL |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2008-11-20 |
|
| 331-465
| 4 |
West Chicago |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2008-03-28 |
|
| 331-465
| 5 |
West Chicago |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-10-30 |
|
| 331-465
| 6 |
West Chicago |
IL |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2009-11-06 |
|
| 331-465
| 7 |
West Chicago |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2009-01-01 |
|
| 331-465
| 8 |
West Chicago |
IL |
|
515J IP HORIZON LLC |
358 |
|
2021-06-26 |
|
| 331-465
| 9 |
West Chicago |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2008-12-12 |
|
| 331-466
| A |
Glen Ellyn |
IL |
CHCGILWUTMD |
516J TON80 COMMUNICATIONS, LLC |
358 |
|
|
|
| 331-466
| 0 |
Glen Ellyn |
IL |
CHCGILCNHMD |
073H TELNYX LLC |
358 |
|
2022-05-12 |
|
| 331-466
| 1 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-466
| 2 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-466
| 3 |
Glen Ellyn |
IL |
CHCGILWUTMD |
516J TON80 COMMUNICATIONS, LLC |
358 |
|
2022-04-21 |
|
| 331-466
| 4 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-466
| 5 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-466
| 6 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-466
| 7 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-07-03 |
|
| 331-466
| 8 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-466
| 9 |
Glen Ellyn |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2023-10-16 |
|
| 331-472
| A |
Naperville |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-472
| 0 |
Naperville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-11-27 |
|
| 331-472
| 1 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2008-12-19 |
|
| 331-472
| 2 |
Naperville |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2009-01-29 |
|
| 331-472
| 3 |
Naperville |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2010-11-20 |
|
| 331-472
| 4 |
Naperville |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2010-11-29 |
|
| 331-472
| 5 |
Naperville |
IL |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2009-07-24 |
|
| 331-472
| 6 |
Naperville |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2010-12-16 |
|
| 331-472
| 7 |
Naperville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-02-20 |
|
| 331-472
| 8 |
Naperville |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2010-12-18 |
|
| 331-472
| 9 |
Naperville |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2008-12-06 |
|
| 331-481
| A |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 331-481
| 0 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2009-01-01 |
|
| 331-481
| 1 |
Downers Grove |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2009-02-12 |
|
| 331-481
| 2 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2009-10-16 |
|
| 331-481
| 3 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2009-05-18 |
|
| 331-481
| 4 |
Downers Grove |
IL |
CHCGILDTKMD |
5447 ACCESS ONE, INC. - IL |
358 |
|
2009-02-19 |
|
| 331-481
| 5 |
Downers Grove |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2010-03-04 |
|
| 331-481
| 6 |
Downers Grove |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-11-17 |
|
| 331-481
| 7 |
Downers Grove |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2009-06-16 |
|
| 331-481
| 8 |
Downers Grove |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2009-06-30 |
|
| 331-481
| 9 |
Downers Grove |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2009-02-20 |
|
| 331-500
| A |
Geneva |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
|
|
| 331-500
| 0 |
Geneva |
IL |
CHCGILWURMD |
965H FRACTEL, LLC |
358 |
|
2021-03-04 |
|
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Last updated: Sat, 04 Jul 2026 13:07:56 UTC
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