Local Calling Guide
Area code/prefix search
NPA: 312
[Rate centres in NPA 312]
[Dial plan for NPA 312]
<< 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 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
312-931
| 1 |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-931
| 2 |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-931
| 3 |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-931
| 4 |
Chicago Zone 01-Franklin |
IL |
CHCGILTCDS4 |
7056 XO ILLINOIS, INC. |
358 |
|
2011-01-05 |
|
312-931
| 5 |
Chicago Zone 01-Franklin |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2011-09-20 |
|
312-931
| 6 |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-931
| 7 |
Chicago Zone 01-Franklin |
IL |
ARLHILJQBMD |
6664 SPRINT SPECTRUM L.P. |
358 |
|
2011-01-05 |
|
312-931
| 8 |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-931
| 9 |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| A |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 0 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 1 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 2 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 3 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 4 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 5 |
Chicago Zone 01-Superior |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2001-12-06 |
|
312-932
| 6 |
Chicago Zone 01-Superior |
IL |
EKGVILAADS0 |
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
2000-07-07 |
|
312-932
| 7 |
Chicago Zone 01-Superior |
IL |
EKGVILAADS0 |
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
2000-07-07 |
|
312-932
| 8 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-932
| 9 |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-933
| A |
Chicago Zone 01-Wabash |
IL |
ARLHILJQBMD |
6664 SPRINT SPECTRUM L.P. |
358 |
|
|
|
312-934
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
312-934
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2015-12-18 |
|
312-934
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METRO PCS, INC. |
358 |
|
2015-12-05 |
|
312-934
| 2 |
Chicago Zone 01-Calumet |
IL |
CHCGILDT8MD |
7575 CENTURYLINK COMMUNICATIONS LLC |
358 |
|
2015-03-09 |
|
312-934
| 3 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-934
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-934
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-934
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-934
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-934
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-934
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-02-05 |
|
312-935
| A |
Chicago Zone 01-Wabash |
IL |
CHCGILWBDS3 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-936
| A |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS4 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-937
| A |
Chicago Zone 01-Calumet |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
312-937
| 0 |
Chicago Zone 01-Calumet |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-11-09 |
|
312-937
| 1 |
Chicago Zone 01-Calumet |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-11-09 |
|
312-937
| 2 |
Chicago Zone 01-Calumet |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-11-09 |
|
312-937
| 3 |
Chicago Zone 01-Calumet |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-11-09 |
|
312-937
| 4 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-07-22 |
|
312-937
| 5 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF6MD |
6529 T-MOBILE USA, INC. |
358 |
|
2015-07-22 |
|
312-937
| 6 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METRO PCS, INC. |
358 |
|
2015-07-22 |
|
312-937
| 7 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METRO PCS, INC. |
358 |
|
2015-07-22 |
|
312-937
| 8 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METRO PCS, INC. |
358 |
|
2015-07-22 |
|
312-937
| 9 |
Chicago Zone 01-Calumet |
IL |
CHCGILMF4MD |
5562 METRO PCS, INC. |
358 |
|
2014-11-15 |
|
312-938
| A |
Chicago Zone 01-Lakeshore |
IL |
CHCGILLRDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-939
| A |
Chicago Zone 01-Wabash |
IL |
CHCGILWBDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
312-940
| A |
Chicago Zone 01-Calumet |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
|
|
312-940
| 0 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2013-11-11 |
|
312-940
| 1 |
Chicago Zone 01-Calumet |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2013-11-11 |
|
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Last updated: Sun, 28 Feb 2021 19:06:05 UTC
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