suggest.yandex.net is a subdomain of Yandex, one of the world's largest search engines. Normally that would be a green light, but this specific address appears to be abandoned. It currently returns a 404 page, meaning there's nothing useful to interact with. The security setup is also outdated — it still allows TLS 1.0 and 1.1, which browsers have rejected for years. There's no contact form, no privacy policy, and no evidence anyone is maintaining the service. While Yandex itself is a legitimate company with a long track record, a dead subdomain isn't something you should trust with any data. If you're wondering 'is suggest.yandex.net a scam', the answer is more like 'it's a ghost'. There's no active scam here because there's nothing functioning to scam you with. But if you happened to land here expecting search suggestions, you'll get nothing but an error. The safest move is to ignore this URL and use Yandex's main site instead.