This page lives on ok.ru, a major Russian social network, but that doesn't guarantee safety. The big problem here is that the site is unreachable over HTTPS because the SSL certificate is invalid. That means if you try to visit it, your browser will likely block you or show a warning. For a page hosted on a platform that usually works fine, this is a clear red flag.
We found an About page and legal disclosures, which suggests someone put some thought into the page. But without a working secure connection, those pages might as well not exist. You can't even see the content to judge if it's a personal blog, a small business, or something else.
If you're wondering whether 742231.ms.ok.ru is safe to visit, the answer is no — at least not until the SSL issue is fixed. Always avoid entering any personal information or clicking links on pages with broken security. This is a case where the technical infrastructure fails so badly that the site's intent becomes irrelevant.