| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| ALARM DETECTION INDUSTRIES INC | Business | 127001056 | AURORA | NOT RENEWED | Verify |
| ALARM DETECTION SYSTEMS INC | Business | 192000270 | AURORA | ACTIVE | Verify |
| ALARM DETECTION SYSTEMS INC | Business | 122000595 | AURORA | NOT RENEWED | Verify |
| ALARM DETECTION SYSTEMS INC | Business | 128000240 | LIBERTYVILLE | CLOSED | Verify |
| ALARM DETECTION SYSTEMS INC | Business | 127000143 | AURORA | ACTIVE | Verify |
| ALARM DETECTION SYSTEMS INC | Business | 117000632 | AURORA | NOT RENEWED | Verify |
| ALARM ENTERPRISES | Business | 127000764 | OAK PARK | NOT RENEWED | Verify |
| ALARM GUY SECURITY CORPORATION | Business | 127001819 | HOMER GLEN | ACTIVE | Verify |
| ALARM MAX INC | Business | 127001469 | CHICAGO | ACTIVE | Verify |
| ALARM MONITOR INC | Business | 127000829 | CHICAGO | NOT RENEWED | Verify |
| ALARM MONITORING INC | Business | 127001040 | MORTON GROVE | ACTIVE | Verify |
| ALARM ONE INC | Business | 128000170 | ALSIP | NOT RENEWED | Verify |
| ALARM PRO INC | Business | 128000132 | NORRIDGE | NOT RENEWED | Verify |
| ALARM PRO INC | Business | 127000892 | TINLEY PARK | NOT RENEWED | Verify |
| ALARM PRO INC | Business | 128000131 | NAPERVILLE | NOT RENEWED | Verify |
| ALARM PRO INC | Business | 127000892 | TINLEY PARK | NOT RENEWED | Verify |
| ALARM PRODUCTS CORPORATION | Business | 127000263 | WESTMONT | NOT RENEWED | Verify |
| ALARM PROTECTION INC | Business | 127000624 | MOUND CITY | NOT RENEWED | Verify |
| ALARM PROTECTION INC | Business | 102000076 | MOUND CITY | ACTIVE | Verify |
| ALARM SECURITY INC | Business | 127000561 | DES PLAINES | ACTIVE | Verify |
| ALARM SPECIALISTS INC | Business | 127000653 | FREEPORT | NOT RENEWED | Verify |
| ALARM SPECIALTIES AND PROTECTION INC | Business | 127001045 | HAMPSHIRE | ACTIVE | Verify |
| ALARM SYSTEMS INC | Business | 127000219 | QUINCY | NOT RENEWED | Verify |
| ALARM SYSTEMS INC | Business | 127001564 | QUINCY | ACTIVE | Verify |
| ALARM-TECH INC | Business | 127000236 | INGLESIDE | NOT RENEWED | Verify |
| ALARM-TRAC INC | Business | 127000189 | SCHAUMBURG | NOT RENEWED | Verify |
| ALARMCO-CHICAGO | Business | 127000119 | PARK RIDGE | NOT RENEWED | Verify |
| ALARMEX SECURITY INC | Business | 127001198 | SCHAUMBURG | NOT RENEWED | Verify |
| ALARMS AND VIDEO SYSTEMS INC | Business | 127000145 | CRESTWOOD | NOT RENEWED | Verify |
| ALARMS CENTRAL VAC INTERCOM SYSTEMS INC | Business | 127000581 | SOMONAUK | NOT RENEWED | Verify |
| ALARMS PLUS LTD | Business | 127001354 | FRANKFORT | NOT RENEWED | Verify |
| ALARMS TO YOU | Business | 127000101 | CHICAGO | NOT RENEWED | Verify |
| ALARMS UNLIMITED INC | Business | 127000298 | LINCOLNWOOD | NOT RENEWED | Verify |
| ALARMS UNLIMITED INC | Business | 127000298 | LINCOLNWOOD | NOT RENEWED | Verify |
| ALARMS UNLIMITED MONITORING INC | Business | 127001057 | CHICAGO | NOT RENEWED | Verify |
| ALARMTECH | Business | 127000877 | ROCKFORD | INOPERATIVE | Verify |
| ALBANY & WASHBURNE INC | Business | 117001661 | RICHTON PARK | ACTIVE | Verify |
| ALBANY BANK & TRUST CO NA | Business | 120500059 | CHICAGO | NOT RENEWED | Verify |
| ALBERT D CHESSER | Business | 122000773 | LYNWOOD | NOT RENEWED | Verify |
| ALBERT D CHESSER | Business | 117000995 | LYNWOOD | NOT RENEWED | Verify |
| ALBERT D CHESSER SEC | Business | 122000240 | CHICAGO | NOT RENEWED | Verify |
| ALBERT D CHESSER SECCONSULTANTS INC | Business | 127000230 | CHICAGO | NOT RENEWED | Verify |
| ALBERT D CHESSER SECCONSULTANTS INC | Business | 117000356 | CHICAGO | NOT RENEWED | Verify |
| ALBERT INVESTIGATIONS | Business | 117001499 | QUINCY | NOT RENEWED | Verify |
| ALERT ALARM & SECURITY INC | Business | 127001418 | HOMEWOOD | NOT RENEWED | Verify |
| ALERT ALARM CORP | Business | 127000801 | NORTHBROOK | NOT RENEWED | Verify |
| ALERT CENTRE INC | Business | 128000065 | HOMEWOOD | CLOSED | Verify |
| ALERT CENTRE INC | Business | 128000064 | HOMEWOOD | NOT RENEWED | Verify |
| ALERT FIRE SYSTEMS, INC | Business | 127001887 | TINLEY PARK | ACTIVE | Verify |
| ALERT ONE SECURITY SYSTEMS INC | Business | 127000914 | TINLEY PARK | NOT RENEWED | Verify |