| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| CAT SECURITY | Business | 122000039 | ALSIP | INOPERATIVE | Verify |
| CAT SECURITY INC | Business | 117000047 | ALSIP | INOPERATIVE | Verify |
| CATTANEO ELECTRIC CO | Business | 127000619 | DARIEN | NOT RENEWED | Verify |
| CAVO BROADBAND COMMUNICATIONS LLC | Business | 127001505 | PLAINFIELD | ACTIVE | Verify |
| CBS SECURITY INC | Business | 122000868 | BURR RIDGE | NOT RENEWED | Verify |
| CC SECURITY LLC | Business | 127001461 | SPRING GROVE | NOT RENEWED | Verify |
| CCA SERVICES INC | Business | 127001850 | MOKENA | ACTIVE | Verify |
| CCA SERVICES-CONSUMER CUSTOM ALARM SERVICES LLC | Business | 127001594 | MOKENA | ACTIVE | Verify |
| CDM COMMUNICATIONS INC | Business | 127000604 | NAPERVILLE | NOT RENEWED | Verify |
| CDS SECURITY SYSTEMS | Business | 122000308 | EVERGREEN PARK | NOT RENEWED | Verify |
| CDS SECURITY SYSTEMS | Business | 117000310 | EVERGREEN PARK | NOT RENEWED | Verify |
| CDW LLC | Business | 127001848 | VERNON HILLS | ACTIVE | Verify |
| CECIL B WOOD INC | Business | 127000328 | ROCKFORD | NOT RENEWED | Verify |
| CELLULAR DYNAMICS INC | Business | 127001041 | CHICAGO | NOT RENEWED | Verify |
| CELTIC CORPORATION | Business | 122001598 | CHICAGO | ACTIVE | Verify |
| CELTIC CORPORATION | Business | 117001905 | CHICAGO | ACTIVE | Verify |
| CELTIC SECURITY INC | Business | 122001198 | CHCAGO | NOT RENEWED | Verify |
| CENOIS PRIVATE DETECTIVE FIREARM TR CR | Business | 102000029 | DECATUR | ACTIVE | Verify |
| CENOIS PRIVATE DETECTIVES | Business | 201000154 | DECATUR | ACTIVE | Verify |
| CENOIS PRIVATE DETECTIVES INC | Business | 118000016 | LIBERTYVILLE | NOT RENEWED | Verify |
| CENTENNIAL SECURITY AGCY | Business | 201000191 | CHICAGO | ACTIVE | Verify |
| CENTER FOR SECURITY TRAINING | Business | 102000099 | CHICAGO | ACTIVE | Verify |
| CENTINEL SECURITY INC | Business | 122001633 | HOMER GLEN | ACTIVE | Verify |
| CENTRAL COMMAND INVESTIGATIONS LLC | Business | 117001461 | LAKE ZURICH | NOT RENEWED | Verify |
| CENTRAL DETECTIVE AGENCY | Business | 122000022 | SPRINGFIELD | CANCELLED | Verify |
| CENTRAL DETECTIVE AGENCY | Business | 122000528 | PAWNEE | NOT RENEWED | Verify |
| CENTRAL DETECTIVE INVESTIGATIONS INC | Business | 117001430 | CAROL STREAM | NOT RENEWED | Verify |
| CENTRAL ELECTRIC | Business | 127000108 | ALTON | NOT RENEWED | Verify |
| CENTRAL FIRE AND SECURITY CENFAS | Business | 127000341 | CHICAGO | INOPERATIVE | Verify |
| CENTRAL ILL POLICE TRAINING CENTER | Business | 201000835 | EAST PEORIA | ACTIVE | Verify |
| CENTRAL ILLINOIS ALARMS INC | Business | 127000411 | BOLINGBROOK | CLOSED | Verify |
| CENTRAL ILLINOIS SECURITY CO | Business | 127000548 | DECATUR | NOT RENEWED | Verify |
| CENTRAL ILLINOIS SECURITY INCORPORATED | Business | 127000574 | SPRINGFIELD | ACTIVE | Verify |
| CENTRAL INVESTIGATIONS & POLYGRAPH | Business | 117000642 | BLOOMINGTON | NOT RENEWED | Verify |
| CENTRAL INVESTIGATIVE AGCY | Business | 122000467 | CHICAGO | NOT RENEWED | Verify |
| CENTRAL INVESTIGATIVE AGENCY | Business | 117000530 | CHICAGO | NOT RENEWED | Verify |
| CENTRAL INVESTIGATIVE SERVICE INC | Business | 122000440 | WESTERN SPRINGS | NOT RENEWED | Verify |
| CENTRAL SECURITY AGENCY LTD | Business | 122000746 | DARIEN | NOT RENEWED | Verify |
| CENTRAL SECURITY AGENCY, INC | Business | 117001953 | CHICAGO | ACTIVE | Verify |
| CENTRAL SECURITY AGENCY, INC | Business | 122001687 | CHICAGO | ACTIVE | Verify |
| CENTRAL STATES INVESTIGATIONS | Business | 122000464 | SPRINGFIELD | NOT RENEWED | Verify |
| CENTRAL STATES INVESTIGATIONS | Business | 117000528 | SPRINGFIELD | NOT RENEWED | Verify |
| CENTRAL YMCA COMMUNITY COLLEGE | Business | 201000148 | CHICAGO | CLOSED | Verify |
| CENTRIC SECURITY & AUTOMATION INC | Business | 127001516 | COLLINSVILLE | ACTIVE | Verify |
| CENTURION ELECTRONICS INC | Business | 127001137 | ROSELLE | NOT RENEWED | Verify |
| CENTURION INVESTIGATIONS AND SECURITY INC | Business | 117001747 | CHICAGO | NOT RENEWED | Verify |
| CENTURION INVESTIGATIONS AND SECURITY INC | Business | 122001381 | CHICAGO | ACTIVE | Verify |
| CENTURION INVESTIGATORS INC | Business | 122000348 | SOUTH JACKSONVILLE | NOT RENEWED | Verify |
| CENTURION SECURITY CORPORATION | Business | 122000673 | BLOOMINGDALE | NOT RENEWED | Verify |
| CENTURION SECURITY INC | Business | 201000116 | NAPERVILLE | ACTIVE | Verify |