| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| CSH SECURITY SYSTEMS INC | Business | 127001493 | BRADLEY | NOT RENEWED | Verify |
| CTS OF ILLINOIS INC | Business | 127001415 | MONTGOMERY | ACTIVE | Verify |
| CULPER INC | Business | 122001322 | PARK RIDGE | ACTIVE | Verify |
| CULPER INC | Business | 117001631 | PARK RIDGE | ACTIVE | Verify |
| CUNNINGHAM ELECTRIC COMPANY | Business | 127000097 | BROWNS | NOT RENEWED | Verify |
| CUNNINGHAM SECURITY SYSTEMS INC | Business | 127000195 | SCHAUMBURG | NOT RENEWED | Verify |
| CUNNINGHAM SECURITY SYSTEMS INC | Business | 127000820 | SCHAUMBURG | CANCELLED | Verify |
| CUP OF JOE COMMUNICATIONS | Business | 127001580 | CHICAGO | ACTIVE | Verify |
| CURRENT TECHNOLOGIES CORPORATION | Business | 127001357 | LOMBARD | ACTIVE | Verify |
| CURRYS LOCK & SECURITY SERVICES | Business | 127000747 | STREAMWOOD | NOT RENEWED | Verify |
| CURTIS DETECTIVE AGCY INC | Business | 201000027 | SPRINGFIELD | ACTIVE | Verify |
| CURTIS DETECTIVE AGENCY INC | Business | 127000228 | SPRINGFIELD | NOT RENEWED | Verify |
| CURTIS DETECTIVE AGENCY INC | Business | 117000322 | SPRINGFIELD | NOT RENEWED | Verify |
| CURTIS DETECTIVE AGENCY INC | Business | 118000039 | HERRIN | NOT RENEWED | Verify |
| CURTIS DETECTIVE AGENCY INCORPORATED | Business | 122000236 | SPRINGFIELD | NOT RENEWED | Verify |
| CURTIS KEY & LOCK SERVICE | Business | 192000204 | CHICAGO | NOT RENEWED | Verify |
| CUSHING PROTECTIVE SERVICES | Business | 117000767 | DECATUR | NOT RENEWED | Verify |
| CUSHING PROTECTIVE SERVICES | Business | 118000146 | CHICAGO | NOT RENEWED | Verify |
| CUSTOM AUDIO & VIDEO INSTALLATIONS INC | Business | 127001101 | TROY | NOT RENEWED | Verify |
| CUSTOM ELECTRONIC SOLUTIONS INC | Business | 127001140 | NORTH CHICAGO | NOT RENEWED | Verify |
| CUSTOM LOCK & SAFE | Business | 192000285 | LAKE BLUFF | NOT RENEWED | Verify |
| CUSTOM PROTECTION SERVICE | Business | 123000140 | ROCKFORD | NOT RENEWED | Verify |
| CUSTOM PROTECTION SERVICE | Business | 122000563 | CORTLAND | NOT RENEWED | Verify |
| CUSTOM RESIDENTIAL SYSTEMS INC | Business | 127001163 | HOFFMAN ESTATES | NOT RENEWED | Verify |
| CUSTOM RESIDENTIAL SYSTEMS INC | Business | 127001329 | ROLLING MEADOWS | ACTIVE | Verify |
| CUSTOM SECURITY CONTROL | Business | 127000109 | TINLEY PARK | NOT RENEWED | Verify |
| CUSTOM SECURITY ELECTRONICS INC | Business | 127001008 | ITASCA | ACTIVE | Verify |
| CUSTOM SECURITY SYSTEMS INC | Business | 127000372 | CHICAGO | CANCELLED | Verify |
| CUSTOMIZED PROTECTION SERVICES INC | Business | 127001475 | WHEATON | ACTIVE | Verify |
| CUSTOMIZED PROTECTION SERVICES INC | Business | 127001028 | DOWNERS GROVE | CHANGE OF OWNERSHIP | Verify |
| CYBERTECH SECURITY | Business | 262000066 | WATERMAN | NOT RENEWED | Verify |
| CYBERTECH SECURITY | Business | 117001591 | WATERMAN | NOT RENEWED | Verify |
| D & D FIRE & SECURITY, INC. | Business | 127001866 | FRANKFORT | ACTIVE | Verify |
| D & D INVESTIGATIONS | Business | 117000900 | CHICAGO | NOT RENEWED | Verify |
| D & D INVESTIGATIONS | Business | 117000401 | BENSENVILLE | NOT RENEWED | Verify |
| D & D INVESTIGATIONS | Business | 118000097 | LISLE | NOT RENEWED | Verify |
| D & D INVESTIGATIONS | Business | 118000158 | CHICAGO | NOT RENEWED | Verify |
| D & D INVESTIGATIONS & SECURITY SERVICES INC | Business | 102000112 | LOMBARD | ACTIVE | Verify |
| D & I ELECTRONICS INC | Business | 127001276 | PLAINFIELD | ACTIVE | Verify |
| D & I SECURITY INC | Business | 122001206 | WHEATON | NOT RENEWED | Verify |
| D & I SECURITY INC | Business | 117001691 | WHEATON | NOT RENEWED | Verify |
| D & L INVESTIGATIONS | Business | 117000593 | BELLEVILLE | NOT RENEWED | Verify |
| D & S PRIVATE SECURITY INC | Business | 122001180 | PARK RIDGE | NOT RENEWED | Verify |
| D AND D INVESTIGATIONS | Business | 118000017 | VILLA PARK | NOT RENEWED | Verify |
| D AND D SECURITY SERVICES | Business | 122000374 | VILLA PARK | CANCELLED | Verify |
| D AND E ELECTRIC COMPANY | Business | 127000416 | MARKHAM | NOT RENEWED | Verify |
| D AND I ELECTRONICS | Business | 127000113 | PLAINFIELD | NOT RENEWED | Verify |
| D AND J ELECTRIC INC | Business | 127001156 | CHICAGO | NOT RENEWED | Verify |
| D C L SECURITY INC | Business | 122000154 | BOLINGBROOK | CANCELLED | Verify |
| D C L SECURITY INC | Business | 127000051 | BOLINGBROOK | CANCELLED | Verify |