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 |
| 312-994
| 9 |
CHCGILWBXWZ |
829J PAETEC ITEL, LLC |
358 |
|
2000-06-29 |
|
| 312-995
| A |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
|
|
| 312-995
| 0 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 1 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2014-10-14 |
|
| 312-995
| 2 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 3 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 4 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-995
| 5 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 6 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 7 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 8 |
CHCGILCGDS1 |
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
358 |
|
2014-10-13 |
|
| 312-995
| 9 |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2014-10-14 |
|
| 312-998
| A |
CHCGILDT8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
|
|
| 312-998
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 2 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 3 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 4 |
CHCGILDT8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
2014-10-03 |
|
| 312-998
| 5 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 6 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 7 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 8 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-998
| 9 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2014-10-10 |
|
| 312-999
| A |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
|
|
| 312-999
| 0 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-08-14 |
|
| 312-999
| 1 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2010-12-02 |
|
| 312-999
| 2 |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2010-12-02 |
|
| 312-999
| 3 |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2024-10-14 |
|
| 312-999
| 4 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2010-12-02 |
|
| 312-999
| 5 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2010-12-02 |
|
| 312-999
| 6 |
DWGVILMCPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
358 |
|
2010-12-02 |
|
| 312-999
| 7 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-08-14 |
|
| 312-999
| 8 |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2011-08-14 |
|
| 312-999
| 9 |
CHCGILWUX6X |
460K FIRST COMMUNICATIONS, LLC |
358 |
|
2014-01-02 |
|
| 773-215
| A |
LBRDILGOAMD |
6630 SPOK, INC. |
358 |
|
|
|
| 773-216
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 1 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 2 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 3 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 4 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 5 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 6 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 7 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 8 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-216
| 9 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-222
| A |
LBRDILGOAMD |
6630 SPOK, INC. |
358 |
|
|
|
| 773-258
| A |
LBRDILGOAMD |
6630 SPOK, INC. |
358 |
|
|
|
| 773-317
| A |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 773-317
| 0 |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
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Last updated: Sat, 01 Aug 2026 03:19:33 UTC
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