| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| COLLEGE OF DU PAGE | Business | 102000368 | GLEN ELLYN | ACTIVE | Verify |
| COLLEGE OF LAKE COUNTY | Business | 102000115 | GRAYSLAKE | ACTIVE | Verify |
| COLLISION ANALYTICS LLC | Business | 117001857 | WOODSTOCK | ACTIVE | Verify |
| COLOR COMMUNICATIONS | Business | 120100098 | CHICAGO | NOT RENEWED | Verify |
| COLUMBIA SIGNAL CO | Business | 127000957 | FOREST PARK | NOT RENEWED | Verify |
| COLUMBUS-CABRINI MEDICAL CENTER | Business | 120100076 | CHICAGO | NOT RENEWED | Verify |
| COMBINED CONTRACT SERVICES INC | Business | 122000531 | CHICAGO | NOT RENEWED | Verify |
| COMBINED CONTRACT SERVICES INC | Business | 123000129 | SCHILLER PARK | NOT RENEWED | Verify |
| COMBINED INVESTIGATIVE SERVICES INC | Business | 117000512 | WHEATON | NOT RENEWED | Verify |
| COMBINED SECURITY SERVICES INC | Business | 117000455 | BUFFALO GROVE | NOT RENEWED | Verify |
| COMCAST BROADBAND SECURITY LLC | Business | 127001503 | CHICAGO | ACTIVE | Verify |
| COMCAST BUSINESS CLASS SECURITY LLC | Business | 127001555 | CHICAGO | ACTIVE | Verify |
| COMM EXEC INVESTIGATIONS INC | Business | 117000447 | SOUTH HOLLAND | NOT RENEWED | Verify |
| COMM EXEC INVESTIGATIONS INC | Business | 122000391 | SOUTH HOLLAND | NOT RENEWED | Verify |
| COMMANDER SECURITY ENFORCEMENT LLC | Business | 122001134 | CHICAGO | NOT RENEWED | Verify |
| COMMERCIAL ALARM SYSTEMS LLC | Business | 127001391 | ELMHURST | NOT RENEWED | Verify |
| COMMERCIAL ELECTRONIC SYSTEMS INC | Business | 127000156 | LOMBARD | NOT RENEWED | Verify |
| COMMERCIAL INVEST & PROCESS SERVICE INC | Business | 117000435 | ALTON | NOT RENEWED | Verify |
| COMMERCIAL LIGHT CO | Business | 127000654 | HILLSIDE | NOT RENEWED | Verify |
| COMMERCIAL SECURITY SERVICES INC | Business | 117000670 | CHICAGO | NOT RENEWED | Verify |
| COMMERCIAL SECURITY SERVICES INC | Business | 118000170 | CHICAGO RIDGE | NOT RENEWED | Verify |
| COMMERCIAL SECURITY SERVICES INC | Business | 122000571 | CHICAGO | INOPERATIVE | Verify |
| COMMERCIAL SECURITY SERVICES INC | Business | 117000818 | CHICAGO RIDGE | INOPERATIVE | Verify |
| COMMONWALTH EDISON | Business | 120100024 | CHICAGO | NOT RENEWED | Verify |
| COMMONWEALTH EDISON CO | Business | 120500145 | OAK BROOK | ACTIVE | Verify |
| COMMUNICATION CONNECTIONS INC | Business | 127001657 | ROCKFORD | NOT RENEWED | Verify |
| COMMUNICATION ZONE INC | Business | 127001769 | SCHAUMBURG | NOT RENEWED | Verify |
| COMMUNITY DISCOUNT CTRS | Business | 201000142 | CHICAGO | CLOSED | Verify |
| COMMUNITY FAMILY CENTERS INC | Business | 120000004 | CHICAGO | CANCELLED | Verify |
| COMMUNITY SAVINGS BANK | Business | 120500126 | CHICAGO | ACTIVE | Verify |
| COMMUNITY SECURITY SERVICES INC | Business | 122001096 | CHICAGO | CANCELLED | Verify |
| COMPANY ONE FIRE SUPPRESSION INC | Business | 127001623 | FULTON | NOT RENEWED | Verify |
| COMPANY ONE FIRE SUPPRESSION PLLC | Business | 127001776 | FULTON | ACTIVE | Verify |
| COMPCLAIM INVESTIGATIONS PC | Business | 117000761 | WESTMONT | INACTIVE | Verify |
| COMPETITIVE ADVANTAGE SOLUTIONS LLC | Business | 117001159 | CHICAGO | NOT RENEWED | Verify |
| COMPLETE COMMUNICATIONS INC | Business | 127000274 | ITASCA | NOT RENEWED | Verify |
| COMPLETE INVESTIGATIVE SERVICES INC | Business | 117001298 | JOLIET | NOT RENEWED | Verify |
| COMPLETE PUMP SERVICE CO, INC. | Business | 127001872 | LOMBARD | ACTIVE | Verify |
| COMPLETE TRAINING INSTITUTE | Business | 102000235 | CHICAGO | ACTIVE | Verify |
| COMPREHENSIVE FIREARMS TRAINING | Business | 102000156 | CHICAGO | ACTIVE | Verify |
| COMPREHENSIVE INSVESTIGATIONS INC | Business | 117000527 | FOREST PARK | NOT RENEWED | Verify |
| COMPREHENSIVE INVESTIGATION | Business | 122000672 | CHICAGO | NOT RENEWED | Verify |
| COMPREHENSIVE INVESTIGATION & SECURITY LTD | Business | 117000718 | CHICAGO | CLOSED | Verify |
| COMPREHENSIVE INVESTIGATIVE SERVICES | Business | 117001942 | CHICAGO | ACTIVE | Verify |
| COMPREHENSIVE SECURITY SERV INTL INC | Business | 127000173 | CHICAGO | NOT RENEWED | Verify |
| COMPREHENSIVE SECURITY SERV INTL INC | Business | 117000193 | CHICAGO | NOT RENEWED | Verify |
| COMPREHENSIVE SECURITY SERVICE INTL | Business | 122000215 | CHICAGO | CANCELLED | Verify |
| COMPTEC ENTERPRISES | Business | 117000907 | OAK BROOK | NOT RENEWED | Verify |
| COMPUTER POWER SYSTEMS INC | Business | 127001464 | GRAYSLAKE | NOT RENEWED | Verify |
| COMPUTER POWER SYSTEMS, LLC | Business | 127001714 | GRAYSLAKE | NOT RENEWED | Verify |