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 |
| 312-444
| 1 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 2 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 3 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 4 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 5 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 6 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 7 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-444
| 8 |
Chicago Zone 01-Franklin |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2009-01-15 |
|
| 312-444
| 9 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-445
| A |
Chicago Zone 01-Superior |
IL |
CHCGILSUDS2 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-445
| 0 |
Chicago Zone 01-Superior |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-09 |
|
| 312-445
| 1 |
Chicago Zone 01-Superior |
IL |
|
5562 METRO PCS, INC. |
358 |
|
2016-02-15 |
|
| 312-445
| 2 |
Chicago Zone 01-Superior |
IL |
|
7056 XO ILLINOIS, INC. |
358 |
|
2008-04-17 |
|
| 312-445
| 3 |
Chicago Zone 01-Superior |
IL |
|
7056 XO ILLINOIS, INC. |
358 |
|
2008-04-16 |
|
| 312-445
| 4 |
Chicago Zone 01-Superior |
IL |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2008-04-17 |
|
| 312-445
| 5 |
Chicago Zone 01-Superior |
IL |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2008-04-17 |
|
| 312-445
| 6 |
Chicago Zone 01-Superior |
IL |
|
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
2008-05-13 |
|
| 312-445
| 7 |
Chicago Zone 01-Superior |
IL |
|
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
2008-05-13 |
|
| 312-445
| 8 |
Chicago Zone 01-Superior |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2008-05-14 |
|
| 312-445
| 9 |
Chicago Zone 01-Superior |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-10-26 |
|
| 312-446
| A |
Chicago Zone 01-Calumet |
IL |
|
6664 SPRINT SPECTRUM L.P. |
358 |
|
|
|
| 312-447
| A |
Chicago Zone 01-Wabash |
IL |
CHCGILWBDS2 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-447
| 0 |
Chicago Zone 01-Wabash |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-447
| 1 |
Chicago Zone 01-Wabash |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2011-01-14 |
|
| 312-447
| 2 |
Chicago Zone 01-Wabash |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2006-07-11 |
|
| 312-447
| 3 |
Chicago Zone 01-Wabash |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2006-07-11 |
|
| 312-447
| 4 |
Chicago Zone 01-Wabash |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-06-11 |
|
| 312-447
| 5 |
Chicago Zone 01-Wabash |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2006-07-11 |
|
| 312-447
| 6 |
Chicago Zone 01-Wabash |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2006-07-11 |
|
| 312-447
| 7 |
Chicago Zone 01-Wabash |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2006-07-11 |
|
| 312-447
| 8 |
Chicago Zone 01-Wabash |
IL |
|
5917 FIRST COMMUNICATIONS, LLC |
358 |
|
2008-04-03 |
|
| 312-447
| 9 |
Chicago Zone 01-Wabash |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-09-25 |
|
| 312-448
| A |
Chicago Zone 01-Calumet |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2011-10-02 |
|
| 312-448
| 0 |
Chicago Zone 01-Calumet |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2011-10-02 |
|
| 312-448
| 1 |
Chicago Zone 01-Calumet |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2011-10-02 |
|
| 312-448
| 2 |
Chicago Zone 01-Calumet |
IL |
|
7056 XO ILLINOIS, INC. |
358 |
|
2012-06-07 |
|
| 312-448
| 3 |
Chicago Zone 01-Calumet |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-06-07 |
|
| 312-448
| 4 |
Chicago Zone 01-Calumet |
IL |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-06-07 |
|
| 312-448
| 5 |
Chicago Zone 01-Calumet |
IL |
|
4604 FIRST COMMUNICATIONS LLC - IL |
358 |
|
2012-06-07 |
|
| 312-448
| 6 |
Chicago Zone 01-Calumet |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2012-02-11 |
|
| 312-448
| 7 |
Chicago Zone 01-Calumet |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2012-02-11 |
|
| 312-448
| 8 |
Chicago Zone 01-Calumet |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2012-02-11 |
|
| 312-448
| 9 |
Chicago Zone 01-Calumet |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2011-10-06 |
|
| 312-449
| A |
Chicago Zone 01-Wabash |
IL |
CHCGILBWCM2 |
9748 AMERICAN MESSAGING SERVICES, LLC |
358 |
|
|
|
| 312-450
| A |
Chicago Zone 01-Wabash |
IL |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 312-450
| 0 |
Chicago Zone 01-Wabash |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-09-20 |
|
| 312-450
| 1 |
Chicago Zone 01-Wabash |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2009-01-06 |
|
| 312-450
| 2 |
Chicago Zone 01-Wabash |
IL |
|
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2009-09-04 |
|
| 312-450
| 3 |
Chicago Zone 01-Wabash |
IL |
|
259E YMAX COMMUNICATIONS CORP. - IL |
358 |
|
2009-09-04 |
|
| 312-450
| 4 |
Chicago Zone 01-Wabash |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
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Last updated: Tue, 31 Dec 2019 02:37:20 UTC
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