Bigam.ru has been around since 2003, which is a strong sign of legitimacy for any website. Its domain is registered through a well-known Russian registrar, the SSL certificate is valid, and it has never appeared on any email or security blacklists. The site also enforces email authentication, which reduces the risk of phishing from its name.
However, we hit a wall: the server blocks automated checks and returns a 403 error, so we couldn't inspect the homepage. That means we can't confirm what kind of site this is, who runs it, or whether it collects any data. For a site that's been online for over two decades, this level of privacy is uncommon but not automatically suspicious. It could be a personal project, a private forum, or a business that simply doesn't want bots crawling fledge.
If you're wondering 'is bigam.ru a scam', the evidence doesn't support that conclusion. The domain's long history and clean record are strong points in its favor. The catch is that without being able to see the site's content, we can't advise you to send money or enter personal details. Treat it as a 'look but don't touch' situation until you can see what's actually on the page.