The suspensions had been done in line with Ofsted's "suspending a childcare provider" guidance, the watchdog said.
All three nurseries, Daffodils in Waterloo Road, Smethwick, Stepping Stone, in Green Lane, Halesowen, and Tulip Day, in High Street, West Bromwich, are owned by Daffodils Nursery Ltd and were rated as Good by Ofsted in 2023.
According to the guidance, suspensions happen when it is thought that children may be at risk of harm but does not always mean a provider has done something wrong.
Suspensions remain in force for a set period of six weeks and can be extended. Providers can appeal against decisions to suspend registrations.