| 1st Security Services Of Nevada Corp.company | | Las Vegas, NV | Active | 2006 |
| 24/7 Security, L.L.C.company | | Winnemucca, NV | Expired | 2286 |
| 3 Point Security, LLCcompany | | | Expired | 2200 |
| 3 Sixty Secure Corpcompany | | Las Vegas, NV | Relinquished | 2740 |
| 702 Protection Groupcompany | | | Active | 1286 |
| Access Credit Reports, LLCcompany | | | Status not verified | 41 |
| A Closer Look, LLCcompany | | Las Vegas, NV | Relinquished | 1569 |
| Action Process Service Of Nevadacompany | | Las Vegas, NV | Active | 1478 |
| A Cut Above Investigations LLCcompany | | | Relinquished | 4048 |
| Acxiom Information Security Services, Inccompany | | | Not Licensed | 76 |
| Adams Research Inccompany | | | Not Licensed | 10 |
| Adh Investigationscompany | | | Active | 1744 |
| Adt Security Services Inc.company | | | Inactive | 189 |
| Advance Tactical Church Security Trainingcompany | | | Active | 4112 |
| Advantage Security Enterprisescompany | | | Inactive | 1372 |
| Advocacy Investigation Servicescompany | | Reno, NV | Relinquished | 1002 |
| Aegis Protection Groupcompany | | Las Vegas, NV | Forfeited | 2065 |
| Aerocompany | | | Relinquished | 1235 |
| Agent One Protective Services, L.L.C.company | | Tombstone, AZ | Expired | 2251 |
| Agi-Andre Gardner Investigationscompany | | | Active | 2997 |
| Ag Investigations, Inc.company | | Henderson, NV | Relinquished | 4380 |
| Agscompany | | Las Vegas, NV | Abeyance | 2747 |
| Aihtniroc Security Enterprisecompany | | | Status not verified | 4126 |
| Akal Security Inccompany | | | Not Licensed | 30 |
| Alan W. Zajic-Security Consultantscompany | | Zephyr Cove, NV | Active | 978 |
| Albert Reshawcompany | | | Active | 2285 |
| Alert Consultants LLCcompany | | | Not Licensed | 57 |
| Alert Servicescompany | | | Active | 1337 |
| Alexandra Snipescompany | | | Active | 1876 |
| Alliance Hr & Workplace Investigation Servicescompany | | | Active | 4099 |
| Alliedbarton Security Services LLCcompany | | | Not Licensed | 230 |
| Allied Security, LLCcompany | | | Not Licensed | 421 |
| Allied Universal Enhanced Protection Servicescompany | | Las Vegas, NV | Relinquished | 1370 |
| Allied Universal Enhanced Protection Servicescompany | | | Status not verified | 4551 |
| Allied Universal Executive Protection & Intelligence Servicecompany | | Bellevue, WA | Relinquished | 2081 |
| Allied Universal Risk Advisory And Consulting Servicescompany | | Conshohocken, PA | Relinquished | 1319 |
| All N One Investigative Servicescompany | | | Active | 1379 |
| All State Investigationscompany | | | Inactive | 1547 |
| Alpha Detective Agencycompany | | Las Vegas, NV | Expired | 818 |
| Alpha Security LLCcompany | | | Not Licensed | 193 |
| Aluttiq Security & Technology, LLCcompany | | Anchorage, AK | Expired | 2617 |
| American Detective And Security Agency, Inccompany | | | Not Licensed | 1345 |
| American Guard Services, Inc.company | | Las Vegas, NV | Active | 1364 |
| American Investigatorscompany | | | Active | 1088 |
| American Investigators American Process Servicecompany | | | Active | 1088 |
| American Protection Group, Inc. (Apg)company | | Las Vegas, NV | Expired | 2075 |
| American Security & Protective Services, Inc.company | | | Not Licensed | 302 |
| Andre Gardnercompany | | | Active | 2997 |
| Andrew E. Jonescompany | | | Expired | 495 |
| Andrews Global Security, Inc.company | | Las Vegas, NV | Abeyance | 2747 |