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 |
| 312-985
| 3 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2000-07-07 |
|
| 312-985
| 4 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2000-07-07 |
|
| 312-985
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
|
|
| 312-985
| 6 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-04 |
|
| 312-985
| 7 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2007-11-08 |
|
| 312-985
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2000-05-05 |
|
| 312-985
| 9 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2011-03-26 |
|
| 312-989
| A |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
|
|
| 312-989
| 0 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2016-04-13 |
|
| 312-989
| 1 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2016-04-06 |
|
| 312-989
| 2 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2016-05-09 |
|
| 312-989
| 3 |
|
318J COMCAST IP PHONE, LLC |
358 |
|
2015-07-30 |
|
| 312-989
| 4 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-07-25 |
|
| 312-989
| 5 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-07-25 |
|
| 312-989
| 6 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-07-25 |
|
| 312-989
| 7 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-07-25 |
|
| 312-989
| 8 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-07-25 |
|
| 312-989
| 9 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2015-07-25 |
|
| 312-994
| A |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2024-12-09 |
|
| 312-994
| 0 |
|
829J PAETEC ITEL, LLC |
358 |
|
|
|
| 312-994
| 1 |
|
829J PAETEC ITEL, LLC |
358 |
|
2009-08-25 |
|
| 312-994
| 2 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-09-16 |
|
| 312-994
| 3 |
|
829J PAETEC ITEL, LLC |
358 |
|
2010-04-22 |
|
| 312-994
| 4 |
|
829J PAETEC ITEL, LLC |
358 |
|
2009-08-28 |
|
| 312-994
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
|
|
| 312-994
| 6 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2001-06-15 |
|
| 312-994
| 7 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2000-08-04 |
|
| 312-994
| 8 |
|
829J PAETEC ITEL, LLC |
358 |
|
2007-05-18 |
|
| 312-994
| 9 |
|
829J PAETEC ITEL, LLC |
358 |
|
2000-06-29 |
|
| 312-995
| A |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-995
| 0 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 1 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2014-10-14 |
|
| 312-995
| 2 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 3 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 4 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 5 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 7 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 8 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 9 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-998
| A |
CHCGILDT8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-998
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 4 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
2014-10-03 |
|
| 312-998
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 6 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 7 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 8 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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