A Dutch court has banned a man from donating any more of his sperm after it was discovered that he fathered at least 550 children in the Netherlands and other countries, and misled prospective parents about how many offspring he helped to conceive.

A judge at The Hague District Court ordered the halt Friday in an injunction brought by the mother of a child conceived with the donor’s sperm along with a foundation representing other parents.

The court highlighted that the donor misled potential parents about his history of donations and that under Dutch law, sperm donors are only permitted to father a maximum of 25 children from 12 different women.

The group argued that by exceeding those limits – by far – the man risked harming his donor children’s mental well-being, while increasing the risk of incest.