| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| DARRAH AND LEIBRECHT | Business | 122000359 | HICKORY HILLS | NOT RENEWED | Verify |
| DARRAH AND LEIBRECHT | Business | 127000468 | HICKORY HILLS | NOT RENEWED | Verify |
| DART INVESTIGATIONS PLLC | Business | 117001881 | BOURBONNAIS | ACTIVE | Verify |
| DASCIAD INTELLIGENCE LLC | Business | 117001523 | TINLEY PARK | NOT RENEWED | Verify |
| DAT SECURITY, PLLC | Business | 122001578 | CHICAGO | ACTIVE | Verify |
| DATA CONNECTIONS AND ALARMS INC | Business | 127001225 | ELGIN | NOT RENEWED | Verify |
| DATA MANAGEMENT & CONSULTING SERVICES, INC. | Business | 117001255 | AURORA | INOPERATIVE | Verify |
| DATA MANAGEMENT & CONSULTING SERVICES, INC. | Business | 122000958 | AURORA | INOPERATIVE | Verify |
| DATA MONITORING SERVICES INC | Business | 127000192 | CHICAGO | NOT RENEWED | Verify |
| DATA RESEARCHERS INC | Business | 117000329 | OAK PARK | NOT RENEWED | Verify |
| DATA-COMM SALES INC | Business | 127001722 | CHICAGO | ACTIVE | Verify |
| DATAWATCH SYSTEMS INC | Business | 127001674 | SPRINGFIELD | ACTIVE | Verify |
| DAVE & HARRY LOCKSMITHS INC | Business | 192000104 | CHAMPAIGN | ACTIVE | Verify |
| DAVID A ESHOO & ASSOCIATES LTD | Business | 122001245 | DES PLAINES | ACTIVE | Verify |
| DAVID A ESHOO & ASSOCIATES LTD | Business | 117001625 | DES PLAINES | ACTIVE | Verify |
| DAVID E ABERMAN & ASSOCIATES | Business | 117001543 | CHICAGO | NOT RENEWED | Verify |
| DAVID H ANDREWS AND ASSOCIATES | Business | 117000537 | CHICAGO | NOT RENEWED | Verify |
| DAVID R HIRTZ AND ASSOCIATES INC | Business | 117000803 | CHILLICOTHE | NOT RENEWED | Verify |
| DAVID R LACURE & ASSOCIATES | Business | 117000704 | GENEVA | NOT RENEWED | Verify |
| DAVIS BANCORP INC | Business | 122000429 | CHICAGO | ACTIVE | Verify |
| DAVIS BANCORP INC | Business | 117000487 | CHICAGO | ACTIVE | Verify |
| DAVIS SECURITY INC | Business | 122000186 | DECATUR | INOPERATIVE | Verify |
| DAVIS SECURITY INC | Business | 201000210 | DECATUR | ACTIVE | Verify |
| DAVIS SECURITY INC | Business | 117000434 | DECATUR | NOT RENEWED | Verify |
| DAWN SECURITY AND INVESTIGATION INC | Business | 127000738 | BLOOMINGDALE | NOT RENEWED | Verify |
| DAWN SECURITY AND INVESTIGATION INC | Business | 117000572 | BLOOMINGDALE | NOT RENEWED | Verify |
| DAWN SECURITY AND INVESTIGATION INC | Business | 122000493 | ROSELLE | NOT RENEWED | Verify |
| DAWSON DETECTIVE AGENCY | Business | 118000325 | PEORIA | NOT RENEWED | Verify |
| DAWSON DETECTIVE AGENCY | Business | 117000650 | PEKIN | NOT RENEWED | Verify |
| DAWSON DETECTIVE AGENCY | Business | 117001598 | PEKIN | NOT RENEWED | Verify |
| DAY & ZIMMERMANN LLC | Business | 122000925 | CHICAGO | NOT RENEWED | Verify |
| DBATS INC DBA NARROW SECURITY | Business | 117001279 | CHICAGO | ACTIVE | Verify |
| DBATS INC DBA NARROW SECURITY | Business | 122000974 | CHICAGO | ACTIVE | Verify |
| DC RYAN & ASSOCIATES, INC. | Business | 117001073 | OAK FOREST | INOPERATIVE | Verify |
| DDF CORPORATION | Business | 122001545 | CHICAGO | INOPERATIVE | Verify |
| DEACON SECURITY INC | Business | 122000404 | CHICAGO | NOT RENEWED | Verify |
| DEACON SECURITY INC | Business | 117000461 | CHICAGO | NOT RENEWED | Verify |
| DECATUR LOCK & KEY INC | Business | 192000236 | DECATUR | NOT RENEWED | Verify |
| DECISION STRATEGIES/FAIRFAX INTERNATIONAL LLC | Business | 122000774 | CHICAGO | NOT RENEWED | Verify |
| DECISION STRATEGIES/FAIRFAX INTERNATIONAL, LLC | Business | 117000986 | CHICAGO | INOPERATIVE | Verify |
| DECO SECURITY SERVICES | Business | 123000225 | CHICAGO | NOT RENEWED | Verify |
| DEERE & COMPANY | Business | 120500155 | MOLINE | NOT RENEWED | Verify |
| DEFCON1 | Business | 102000287 | RIVER FOREST | ACTIVE | Verify |
| DEFENDER SECURITY SYSTEMS INC | Business | 122000461 | MOUNT VERNON | NOT RENEWED | Verify |
| DEFENDER SERVICES INC | Business | 122001147 | MT VERNON | NOT RENEWED | Verify |
| DEFENDERS INC | Business | 128000104 | HOMEWOOD | NOT RENEWED | Verify |
| DEFENDERS INC | Business | 128000169 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| DEFENDERS, INC. | Business | 192000321 | SPRINGFIELD | NOT RENEWED | Verify |
| DEFENDGUARD ALARM LLC | Business | 127001367 | ITASCA | CLOSED | Verify |
| DEFINITIVE INVESTIGATIVE SERVICES INCORPORATED | Business | 117001212 | CHICAGO | NOT RENEWED | Verify |