If you are trying to reach events.belajar.id, you will find a blank 404 page instead of a working website. That alone makes it impossible to use for anything right now. The domain appears connected to Indonesia's education ministry (based on a security contact email), but the actual site is not live.
For a site that was likely intended for event registration or educational content, the absence of any contact information or privacy policy is a serious gap. Most legitimate educational platforms clearly state who runs them and how your data is handled. Here, the ownership is hidden β the WHOIS records do not show any registered domain.
Until the site comes back online with transparent details about its purpose and operators, there is no way to evaluate whether it is safe to use. If you are looking for events from the belajar.id ecosystem, consider reaching out through official ministry channels instead.