Yeah,a serverHold is placed by the Registrar.
It could be for a lot of reasons:
- spam, phishing or malware distribution
- contact verification issues
- trademark, copyright or cybersquatting legal issues
- or sometimes even errors or registrar transfer issues
It is a valuable and important domain for TG, most likely they'll resolve it soon
registry*
serverHold is set by the owner of the TLD, not the registrar.