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 |
| 331-627
| 1 |
Lombard |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2022-04-30 |
|
| 331-627
| 3 |
Lombard |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2026-10-12 |
|
| 331-627
| 4 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2022-06-09 |
|
| 331-627
| 5 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2022-06-09 |
|
| 331-627
| 6 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2023-07-20 |
|
| 331-627
| 7 |
Lombard |
IL |
CHCGILWUTMD |
516J TON80 COMMUNICATIONS, LLC |
358 |
|
2022-04-29 |
|
| 331-627
| 8 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2023-05-27 |
|
| 331-627
| 9 |
Lombard |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2023-05-27 |
|
| 331-631
| A |
Downers Grove |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
|
|
| 331-631
| 0 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-09-10 |
|
| 331-631
| 1 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-09-10 |
|
| 331-631
| 2 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-09-10 |
|
| 331-631
| 3 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2022-09-10 |
|
| 331-631
| 4 |
Downers Grove |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2022-10-29 |
|
| 331-631
| 5 |
Downers Grove |
IL |
CHCGILNEXJX |
318J COMCAST IP PHONE, LLC |
358 |
|
2022-10-29 |
|
| 331-631
| 6 |
Downers Grove |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-09-09 |
|
| 331-631
| 7 |
Downers Grove |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-09-09 |
|
| 331-631
| 8 |
Downers Grove |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-09-09 |
|
| 331-631
| 9 |
Downers Grove |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2022-09-09 |
|
| 331-642
| A |
Elmhurst |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 331-642
| 0 |
Elmhurst |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2008-12-12 |
|
| 331-642
| 1 |
Elmhurst |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-04-18 |
|
| 331-642
| 2 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2010-07-15 |
|
| 331-642
| 3 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2010-07-15 |
|
| 331-642
| 4 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2010-07-15 |
|
| 331-642
| 5 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2010-07-15 |
|
| 331-642
| 6 |
Elmhurst |
IL |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2010-04-09 |
|
| 331-642
| 7 |
Elmhurst |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-08-14 |
|
| 331-642
| 8 |
Elmhurst |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-11-27 |
|
| 331-642
| 9 |
Elmhurst |
IL |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2026-08-28 |
|
| 331-643
| A |
Aurora |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-643
| 0 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-02 |
|
| 331-643
| 1 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-02 |
|
| 331-643
| 2 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-02 |
|
| 331-643
| 3 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-02 |
|
| 331-643
| 4 |
Aurora |
IL |
EGVGILIFDS1 |
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2008-11-05 |
|
| 331-643
| 5 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2009-02-19 |
|
| 331-643
| 6 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2009-10-22 |
|
| 331-643
| 7 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2010-05-28 |
|
| 331-643
| 8 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2010-05-28 |
|
| 331-643
| 9 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-02 |
|
| 331-645
| A |
Elmhurst |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-645
| 0 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2008-06-25 |
|
| 331-645
| 1 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2008-06-25 |
|
| 331-645
| 2 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2008-06-25 |
|
| 331-645
| 3 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2008-06-25 |
|
| 331-645
| 4 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-15 |
|
| 331-645
| 5 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-15 |
|
| 331-645
| 6 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-15 |
|
| 331-645
| 7 |
Elmhurst |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2007-11-15 |
|
<< 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 >>
Last updated: Sat, 10 Oct 2026 15:24:20 UTC
Sponsored by: FiberConX Communications Ltd.
Like this site? We accept donations via PayPal.