Local Calling Guide
Area code/prefix search
Chicago Zone 01-Calumet, IL
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-676
| 7 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2006-08-07 |
|
| 312-676
| 8 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2006-08-07 |
|
| 312-676
| 9 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2006-08-07 |
|
| 312-678
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-678
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-24 |
|
| 312-678
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-24 |
|
| 312-678
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-24 |
|
| 312-678
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-678
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-678
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-678
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-678
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-678
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-678
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-09-23 |
|
| 312-680
| A |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 312-680
| 0 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 1 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 2 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 3 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 4 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 5 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 6 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 7 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 8 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-680
| 9 |
|
224C ONVOY, LLC |
358 |
|
2022-07-01 |
|
| 312-682
| A |
CHCGILWBXSZ |
478J NUSO, LLC |
358 |
|
|
|
| 312-682
| 0 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2020-10-31 |
|
| 312-682
| 1 |
|
478J NUSO, LLC |
358 |
|
2020-07-16 |
|
| 312-682
| 2 |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-07-17 |
|
| 312-682
| 3 |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-07-17 |
|
| 312-682
| 4 |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-07-17 |
|
| 312-682
| 5 |
|
624H ONVOY SPECTRUM, LLC |
358 |
|
2020-07-17 |
|
| 312-682
| 6 |
|
478J NUSO, LLC |
358 |
|
2020-08-07 |
|
| 312-682
| 7 |
|
478J NUSO, LLC |
358 |
|
2020-08-07 |
|
| 312-682
| 8 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2020-08-16 |
|
| 312-682
| 9 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2020-10-31 |
|
| 312-684
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-684
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-684
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2016-11-13 |
|
| 312-685
| A |
ELGNILOTGT5 |
5562 METROPCS, INC. |
358 |
|
|
|
| 312-685
| 0 |
|
5562 METROPCS, INC. |
358 |
|
2003-06-03 |
|
| 312-685
| 1 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-04 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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