Belgian authorities are examining whether the Dutch sperm donor also donated in Belgian clinics or through informal networks, and may pursue fraud charges based on press reports as they request official information from the Netherlands.

The donor, linked to Groningen and described as active for over 15 years, is alleged to have fathered more than 100 children, with media indicating several born in Belgium.

The donor has used multiple aliases and admits he did not always disclose the full extent of his donation activities.

Reports suggest the donor operated through clinics and online contact with prospective mothers, potentially spanning more than a decade.

He has reportedly stopped donating and is seeking professional help, according to NOS.

Experts note that if only regulated sperm banks are counted, the donor would have exceeded legal donation limits, implying additional unregulated donations.

The case raises questions about cross-border donor coordination and child protection, given varying national limits and practices.

Stichting Donorkind says the donor offered sperm in exchange for sexual relations and may have misrepresented his number of children to mothers.

The Dutch health ministry has known about the donor for years but has not acted; in 2019 he served on a government commission evaluating donation laws.

NOS reports the donor may have fathered up to 199 children, with Dutch outlets citing 121-199 total and Stichting Donorkind noting contact with affected mothers.

Belgian law limits a donor to six families under the 2007 PM A act, highlighting regulatory constraints.

The donor allegedly donated at Belgian hospitals and international banks serving Belgium, while not always being transparent about the full extent of his donations.