Local Calling Guide
Area code/prefix search
Chicago Zone 01-Calumet, IL
<< 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 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-517
| 1 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2015-11-25 |
|
| 312-517
| 2 |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2017-03-26 |
|
| 312-517
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-03-26 |
|
| 312-517
| 4 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2015-03-26 |
|
| 312-517
| 5 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2015-03-27 |
|
| 312-517
| 6 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2015-03-27 |
|
| 312-517
| 7 |
|
829J PAETEC ITEL, LLC |
358 |
|
2015-03-27 |
|
| 312-517
| 8 |
|
829J PAETEC ITEL, LLC |
358 |
|
2015-03-27 |
|
| 312-517
| 9 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
2015-03-27 |
|
| 312-521
| A |
OKBRILOAXEX |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-521
| 0 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-04 |
|
| 312-521
| 1 |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2002-11-16 |
|
| 312-521
| 2 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-11-20 |
|
| 312-521
| 3 |
|
5562 METROPCS, INC. |
358 |
|
2004-03-01 |
|
| 312-521
| 4 |
|
829J PAETEC ITEL, LLC |
358 |
|
2009-04-08 |
|
| 312-521
| 5 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2009-02-25 |
|
| 312-521
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-521
| 7 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2003-10-22 |
|
| 312-521
| 8 |
|
829J PAETEC ITEL, LLC |
358 |
|
2013-08-23 |
|
| 312-521
| 9 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2011-02-07 |
|
| 312-522
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-522
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-522
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-523
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 0 |
|
829J PAETEC ITEL, LLC |
358 |
|
2005-06-24 |
|
| 312-523
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2010-11-05 |
|
| 312-523
| 2 |
|
829J PAETEC ITEL, LLC |
358 |
|
2005-06-24 |
|
| 312-523
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-523
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-528
| A |
CHCGILCADS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-528
| 0 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-528
| 1 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-528
| 2 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
1999-11-30 |
|
| 312-528
| 3 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2001-02-27 |
|
| 312-528
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-528
| 5 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2019-12-26 |
|
| 312-528
| 6 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-528
| 7 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2011-01-05 |
|
| 312-528
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-528
| 9 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2000-08-29 |
|
| 312-530
| A |
CHCGIL24XMD |
495J STRATUS NETWORKS |
358 |
|
|
|
| 312-530
| 0 |
|
073H TELNYX LLC |
358 |
|
2020-11-08 |
|
| 312-530
| 1 |
|
495J STRATUS NETWORKS |
358 |
|
2020-09-20 |
|
| 312-530
| 2 |
|
5562 METROPCS, INC. |
358 |
|
2020-09-21 |
|
| 312-530
| 3 |
|
5562 METROPCS, INC. |
358 |
|
2020-09-21 |
|
| 312-530
| 4 |
|
5562 METROPCS, INC. |
358 |
|
2020-09-21 |
|
| 312-530
| 5 |
|
5562 METROPCS, INC. |
358 |
|
2020-09-21 |
|
| 312-530
| 6 |
|
5562 METROPCS, INC. |
358 |
|
2020-09-21 |
|
| 312-530
| 7 |
|
224C ONVOY, LLC |
358 |
|
2020-11-09 |
|
| 312-530
| 8 |
|
224C ONVOY, LLC |
358 |
|
2020-11-09 |
|
| 312-530
| 9 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2020-10-31 |
|
| 312-532
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-532
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-09 |
|
| 312-532
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-09 |
|
| 312-532
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-09 |
|
| 312-532
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-29 |
|
| 312-532
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-03-14 |
|
| 312-532
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-29 |
|
| 312-532
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-29 |
|
| 312-532
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-29 |
|
| 312-532
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-08-29 |
|
| 312-532
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2008-03-14 |
|
| 312-534
| A |
CHCGILSUDS0 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-534
| 0 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 1 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 2 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 5 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 6 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 7 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-534
| 9 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2008-11-01 |
|
| 312-535
| A |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 312-535
| 0 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-09-22 |
|
| 312-535
| 1 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-09-22 |
|
| 312-535
| 2 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-09-22 |
|
| 312-535
| 3 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-09-22 |
|
| 312-535
| 4 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2017-09-22 |
|
| 312-535
| 5 |
|
224C ONVOY, LLC |
358 |
|
2017-09-23 |
|
| 312-535
| 6 |
|
224C ONVOY, LLC |
358 |
|
2017-09-23 |
|
| 312-535
| 7 |
|
224C ONVOY, LLC |
358 |
|
2017-09-23 |
|
| 312-535
| 8 |
|
224C ONVOY, LLC |
358 |
|
2017-09-23 |
|
| 312-535
| 9 |
|
224C ONVOY, LLC |
358 |
|
2017-09-23 |
|
| 312-536
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-536
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2015-08-10 |
|
| 312-536
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2015-08-10 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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