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 |
| 312-500
| 6 |
|
224C ONVOY, LLC |
358 |
|
2018-07-21 |
|
| 312-500
| 7 |
|
224C ONVOY, LLC |
358 |
|
2018-07-21 |
|
| 312-500
| 8 |
|
224C ONVOY, LLC |
358 |
|
2018-07-21 |
|
| 312-500
| 9 |
|
224C ONVOY, LLC |
358 |
|
2018-07-21 |
|
| 312-503
| A |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 0 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 1 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 2 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 3 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 4 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 5 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 6 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 7 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 8 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-503
| 9 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-506
| A |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-506
| 0 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-07-15 |
|
| 312-506
| 1 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-07-15 |
|
| 312-506
| 2 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-07-15 |
|
| 312-506
| 3 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-07-15 |
|
| 312-506
| 4 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2008-04-03 |
|
| 312-506
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
2006-05-20 |
|
| 312-506
| 6 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-07-15 |
|
| 312-506
| 7 |
|
5562 METROPCS, INC. |
358 |
|
2005-01-15 |
|
| 312-506
| 8 |
|
829J PAETEC ITEL, LLC |
358 |
|
2006-06-04 |
|
| 312-506
| 9 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2004-07-15 |
|
| 312-508
| A |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
|
|
| 312-508
| 0 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-06-06 |
|
| 312-508
| 1 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-06-06 |
|
| 312-508
| 2 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-06-22 |
|
| 312-508
| 3 |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2012-05-10 |
|
| 312-508
| 4 |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2012-05-10 |
|
| 312-508
| 5 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-06-17 |
|
| 312-508
| 6 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-06-17 |
|
| 312-508
| 7 |
|
046L CLEAR RATE COMMUNICATIONS, LLC |
358 |
|
2012-06-10 |
|
| 312-508
| 8 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-06-06 |
|
| 312-508
| 9 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-06-06 |
|
| 312-509
| A |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
|
|
| 312-509
| 0 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-05-05 |
|
| 312-509
| 1 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-05-05 |
|
| 312-509
| 2 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-05-05 |
|
| 312-509
| 3 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-05-05 |
|
| 312-509
| 4 |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2012-04-27 |
|
| 312-509
| 5 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-05-05 |
|
| 312-509
| 6 |
|
224C ONVOY, LLC |
358 |
|
2012-05-29 |
|
| 312-509
| 7 |
|
224C ONVOY, LLC |
358 |
|
2012-05-29 |
|
| 312-509
| 8 |
|
224C ONVOY, LLC |
358 |
|
2012-05-29 |
|
| 312-509
| 9 |
|
224C ONVOY, LLC |
358 |
|
2012-05-29 |
|
| 312-517
| A |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-517
| 0 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2016-07-16 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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