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 |
| 312-892
| A |
Chicago Zone 01-Franklin |
IL |
CHCGILABDS0 |
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-893
| A |
Chicago Zone 01-Franklin |
IL |
CHCGILABDS0 |
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-894
| A |
Chicago Zone 01-Monroe |
IL |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 0 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 1 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 2 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 3 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 4 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 5 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 6 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 7 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 8 |
Chicago Zone 01-Monroe |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-894
| 9 |
Chicago Zone 01-Monroe |
IL |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2011-08-07 |
|
| 312-895
| A |
Chicago Zone 01-Franklin |
IL |
CHCGILABDS0 |
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-896
| A |
Chicago Zone 01-Superior |
IL |
CHCGILABDS0 |
7721 BROADWING COMMUNICATIONS, LLC - IL |
358 |
|
|
|
| 312-897
| A |
Chicago Zone 01-Calumet |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-897
| 0 |
Chicago Zone 01-Calumet |
IL |
|
5562 METRO PCS, INC. |
358 |
|
2015-06-04 |
|
| 312-897
| 1 |
Chicago Zone 01-Calumet |
IL |
|
4604 FIRST COMMUNICATIONS LLC - IL |
358 |
|
2015-05-25 |
|
| 312-897
| 2 |
Chicago Zone 01-Calumet |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-05-07 |
|
| 312-897
| 3 |
Chicago Zone 01-Calumet |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-05-07 |
|
| 312-897
| 4 |
Chicago Zone 01-Calumet |
IL |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-05-07 |
|
| 312-897
| 5 |
Chicago Zone 01-Calumet |
IL |
|
224C ONVOY, LLC |
358 |
|
2015-06-05 |
|
| 312-897
| 6 |
Chicago Zone 01-Calumet |
IL |
|
224C ONVOY, LLC |
358 |
|
2015-06-05 |
|
| 312-897
| 7 |
Chicago Zone 01-Calumet |
IL |
|
224C ONVOY, LLC |
358 |
|
2015-06-05 |
|
| 312-897
| 8 |
Chicago Zone 01-Calumet |
IL |
|
5562 METRO PCS, INC. |
358 |
|
2015-06-04 |
|
| 312-897
| 9 |
Chicago Zone 01-Calumet |
IL |
|
5562 METRO PCS, INC. |
358 |
|
2015-06-04 |
|
| 312-898
| A |
Chicago Zone 01-Wabash |
IL |
ELGNIL32CM2 |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-899
| A |
Chicago Zone 01-Franklin |
IL |
CHCGILFRDS0 |
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 0 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 1 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 2 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 3 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 4 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 5 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 6 |
Chicago Zone 01-Franklin |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-04 |
|
| 312-899
| 7 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 8 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-899
| 9 |
Chicago Zone 01-Franklin |
IL |
|
9329 AMERITECH ILLINOIS |
358 |
|
|
|
| 312-900
| A |
Chicago Zone 01-Calumet |
IL |
|
965H FRACTEL, LLC |
358 |
|
2019-03-23 |
|
| 312-900
| 0 |
Chicago Zone 01-Calumet |
IL |
|
965H FRACTEL, LLC |
358 |
|
2019-03-23 |
|
| 312-900
| 1 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 2 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 3 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 4 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 5 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 6 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 7 |
Chicago Zone 01-Calumet |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2019-03-24 |
|
| 312-900
| 8 |
Chicago Zone 01-Calumet |
IL |
|
224C ONVOY, LLC |
358 |
|
2019-06-28 |
|
| 312-900
| 9 |
Chicago Zone 01-Calumet |
IL |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2019-05-18 |
|
| 312-901
| A |
Chicago Zone 01-Calumet |
IL |
BURGILAJCM1 |
6630 USA MOBILITY WIRELESS, INC. |
358 |
|
|
|
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Last updated: Sat, 31 Oct 2020 19:28:10 UTC
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