| Naics index | Naics index description |
|---|---|
| 561311 | Model registries |
| 561311 | Nurse registries |
| 561311 | Online employment registries or listing services, including intermediary platform services |
| 561311 | Placement agencies or services, employment |
| 561311 | Referral agencies or services, employment |
| 561311 | Registries, employment |
| 561311 | Registries, teacher |
| 561311 | Ship crew employment agencies |
| 561311 | Ship crew registries |
| 561311 | State operated employment job services offices |