No. RegistryGate operates in Germany but is owned by a parent company based in the United Kingdom, so staysin.eu classifies it as non-EU.
German registrar owned by UK-listed Team Internet Group.
A provider counts as EU only when all three criteria hold:
Where a server physically sits is shown on each check but does not change the verdict: legal reach follows who controls the processing, not where the bytes are. Read the methodology.