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 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 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 312-604
| 0 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-604
| 1 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-604
| 2 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-604
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-604
| 4 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2004-11-27 |
|
| 312-604
| 5 |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2019-03-04 |
|
| 312-604
| 6 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2002-10-16 |
|
| 312-604
| 7 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-604
| 8 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-604
| 9 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-605
| A |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2024-12-09 |
|
| 312-605
| 0 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-10-02 |
|
| 312-605
| 1 |
|
224C ONVOY, LLC |
358 |
|
2012-10-02 |
|
| 312-605
| 2 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-10-02 |
|
| 312-605
| 3 |
|
829J PAETEC ITEL, LLC |
358 |
|
2012-09-29 |
|
| 312-605
| 4 |
|
829J PAETEC ITEL, LLC |
358 |
|
2012-09-29 |
|
| 312-605
| 5 |
|
829J PAETEC ITEL, LLC |
358 |
|
2012-09-29 |
|
| 312-605
| 6 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-10-02 |
|
| 312-605
| 7 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2012-11-04 |
|
| 312-605
| 8 |
|
5447 ACCESS ONE, INC. - IL |
358 |
|
2012-10-02 |
|
| 312-605
| 9 |
|
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2012-11-01 |
|
| 312-610
| A |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 312-610
| 0 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-10-01 |
|
| 312-610
| 1 |
|
515J IP HORIZON LLC |
358 |
|
2013-06-10 |
|
| 312-610
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-06-10 |
|
| 312-610
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2013-06-10 |
|
| 312-610
| 4 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2012-10-02 |
|
| 312-610
| 5 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2012-10-02 |
|
| 312-610
| 6 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2012-10-02 |
|
| 312-610
| 7 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2012-10-02 |
|
| 312-610
| 8 |
|
7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL |
358 |
|
2012-10-02 |
|
| 312-610
| 9 |
|
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-11-18 |
|
| 312-614
| A |
CHCGILCLDS3 |
9329 ILLINOIS BELL TEL CO |
358 |
|
|
|
| 312-614
| 0 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-12-14 |
|
| 312-614
| 1 |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2012-12-14 |
|
| 312-614
| 2 |
|
224C ONVOY, LLC |
358 |
|
2012-12-08 |
|
| 312-614
| 3 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2012-11-23 |
|
| 312-614
| 4 |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2012-11-23 |
|
| 312-614
| 5 |
|
224C ONVOY, LLC |
358 |
|
2012-12-08 |
|
| 312-614
| 6 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-18 |
|
| 312-614
| 7 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-18 |
|
| 312-614
| 8 |
|
9329 ILLINOIS BELL TEL CO |
358 |
|
2012-11-18 |
|
| 312-614
| 9 |
|
6529 T-MOBILE USA, INC. |
358 |
|
2012-11-28 |
|
| 312-617
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-617
| 0 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-617
| 1 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-617
| 2 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-617
| 3 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-617
| 4 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-617
| 5 |
|
6529 T-MOBILE USA, INC. |
358 |
|
|
|
<< 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 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: ISP Telecom
Like this site? We accept donations via PayPal.