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 |
| 312-862
| 9 |
CHCGILFRDS1 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2006-03-18 |
|
| 312-863
| A |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2024-12-09 |
|
| 312-863
| 0 |
BURGILAHGT3 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2011-05-07 |
|
| 312-863
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2005-06-19 |
|
| 312-863
| 2 |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2000-03-13 |
|
| 312-863
| 3 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2000-03-07 |
|
| 312-863
| 4 |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
|
|
| 312-863
| 5 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2000-03-07 |
|
| 312-863
| 6 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2000-03-07 |
|
| 312-863
| 7 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2000-03-07 |
|
| 312-863
| 8 |
BNSVILDGDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2000-03-07 |
|
| 312-863
| 9 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2005-06-19 |
|
| 312-866
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-866
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 2 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 3 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 4 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 5 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 6 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 7 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 8 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-866
| 9 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-24 |
|
| 312-868
| A |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
|
|
| 312-868
| 0 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2016-02-04 |
|
| 312-868
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 2 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 3 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 4 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 5 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 6 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 7 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 8 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-868
| 9 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2016-02-10 |
|
| 312-870
| A |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 0 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2010-03-04 |
|
| 312-870
| 1 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 2 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 3 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 4 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 5 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 6 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 7 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-870
| 8 |
CHCGILFRDS1 |
9329 ILLINOIS BELL TEL CO |
358 |
|
2000-11-03 |
|
| 312-870
| 9 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-871
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 312-871
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-10-13 |
|
| 312-871
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-10-13 |
|
| 312-871
| 2 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2015-10-13 |
|
| 312-871
| 3 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2016-06-25 |
|
<< 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: Sat, 01 Aug 2026 03:19:33 UTC
Sponsored by: ISP Telecom
Like this site? We accept donations via PayPal.