| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| LEGAL INVESTIGATION BUREAU INC | Business | 201000014 | BROOKFIELD | ACTIVE | Verify |
| THE JOHN T LYNCH CO | Business | 201000015 | ROLLING MEADOWS | ACTIVE | Verify |
| NATIONAL INVESTIGATION BUREAU INC | Business | 201000024 | HINSDALE | CLOSED | Verify |
| A1 SECURITY SERVICE CO | Business | 201000048 | CHICAGO | CLOSED | Verify |
| PILGRIM DETECTIVE AGENCY | Business | 201000060 | MATTESON | CLOSED | Verify |
| PATTERSON PROTECTIVE | Business | 201000085 | BARRINGTON | ACTIVE | Verify |
| MIDWEST SECURITY AGCY SECURITY | Business | 201000087 | CHICAGO | ACTIVE | Verify |
| LIMING DETECTIVE AGCY INC | Business | 201000089 | MAROA | ACTIVE | Verify |
| SOUTHWESTERN ILLINOIS COLLEGE | Business | 201000102 | BELLEVILLE | ACTIVE | Verify |
| TRI STATE DETECTIVE AGCY | Business | 201000110 | MARKHAM | ACTIVE | Verify |
| D P S PROTECTION SYSTEMS | Business | 201000112 | EAST ST LOUIS | ACTIVE | Verify |
| ADVANCE INDUSTRIAL SECURITY INC | Business | 201000121 | CHICAGO | ACTIVE | Verify |
| C P P SECURITY SYSTEMS | Business | 201000122 | ELMHURST | ACTIVE | Verify |
| WINDHAM SECURITY SERVICE | Business | 201000125 | BLOOMINGDALE | ACTIVE | Verify |
| WEIBOLT STORES INC | Business | 201000129 | CHICAGO | ACTIVE | Verify |
| CROSS COUNTY BUREAU OF INVESTIGATION | Business | 201000147 | CHICAGO | ACTIVE | Verify |
| PATHFINDER ENTERPRISES | Business | 201000153 | OAK PARK | ACTIVE | Verify |
| CENOIS PRIVATE DETECTIVES | Business | 201000154 | DECATUR | ACTIVE | Verify |
| ATLAS GUARD SERVICE | Business | 201000155 | ROCKFORD | ACTIVE | Verify |
| ILLINOIS LAW ENFORCEMENT ACADEMY | Business | 201000178 | CHICAGO | ACTIVE | Verify |
| R C INVEST SERVICE AND SEC AGCY IN | Business | 201000182 | EVERGREEN PARK | ACTIVE | Verify |
| ALPHAEUS INVESTIGATION AGCY | Business | 201000190 | PEORIA | ACTIVE | Verify |
| JEWEL FOODS SECURITY | Business | 201000193 | MELROSE PARK | ACTIVE | Verify |
| MCGUFFEY DETECTIVE AGCY | Business | 201000212 | WOODSTOCK | ACTIVE | Verify |
| BETHANY HOSPITAL SECURITY | Business | 201000217 | CHICAGO | ACTIVE | Verify |
| ST XAVIER COLLEGE | Business | 201000222 | CHICAGO | ACTIVE | Verify |
| AMERICAN DISTRICT TELEGRAPH CO | Business | 201000224 | ELMHURST | ACTIVE | Verify |
| CHICAGO POLICE ACADEMY | Business | 201000801 | CHICAGO | ACTIVE | Verify |
| CHICAGO POLICE ACADEMY | Business | 201000807 | CHICAGO | ACTIVE | Verify |
| POLICE TRAINING INSTITUTE | Business | 201000809 | CHAMPAIGN | ACTIVE | Verify |
| CHICAGO POLICE ACADEMY | Business | 201000813 | CHICAGO | ACTIVE | Verify |
| FOREST PARK POLICE TRAINING | Business | 201000838 | FOREST PARK | ACTIVE | Verify |
| INTERNATIONAL SCENT SOLUTIONS LLC | Business | 265000001 | BENSENVILLE | ACTIVE | Verify |
| ON-LINE SECURITY SYSTEMS LLC | Business | 264000007 | ROCKFORD | ACTIVE | Verify |
| MPI-K9 | Business | 264000008 | LOVES PARK | ACTIVE | Verify |
| ABLE SECURITY TRAINING SCHOOL | Business | 102000018 | SPRINGFIELD | ACTIVE | Verify |
| SECURITY CONSULTANTS | Business | 102000033 | MIDLOTHIAN | ACTIVE | Verify |
| ACADEMY OF INDUSTRIAL SECURITY INC | Business | 102000041 | LOMBARD | ACTIVE | Verify |
| SECURITY TRAINING CENTER | Business | 102000052 | CHICAGO | CANCELLED | Verify |
| BLACK HAWK TRAINING | Business | 102000053 | EAST MOLINE | ACTIVE | Verify |
| THE KANE SERVICE | Business | 102000065 | CHICAGO | ACTIVE | Verify |
| BOARD APPROVED EQUIVALENCY TRAINING | Business | 102000068 | SPRINGFIELD | ACTIVE | Verify |
| AUTOMOTIVE TECHNICAL | Business | 102000105 | CHICAGO | ACTIVE | Verify |
| KINGSMEN SECURITY TRAINING INC | Business | 102000114 | CHICAGO | ACTIVE | Verify |
| EASTERN MAINTENANCE AND | Business | 102000132 | CHICAGO | ACTIVE | Verify |
| PROTECTION INC | Business | 102000137 | NILES | ACTIVE | Verify |
| ALTON RIVERBOAT GAMBLING | Business | 102000149 | ALTON | ACTIVE | Verify |
| ALLIANCE LAW ENFORCEMENT | Business | 102000162 | CHICAGO | ACTIVE | Verify |
| CIC CONFIDENTIAL INVESTIGATIVE | Business | 102000168 | CHICAGO | ACTIVE | Verify |
| ILLINOIS SECURITY SERVICES INC | Business | 102000175 | CHICAGO | ACTIVE | Verify |