When you land on nap-sdk.mihoyo.com, you get a 404 error page. That might be a minor glitch, but the surrounding signals tell a more troubling story. The site has no contact details, no company information, and no privacy policy or terms of service. For a subdomain that likely serves an SDK or development tool, that's unusual even for an internal endpoint. The domain is technically part of Mihoyo (now HoYoverse), a major game studio, but the WHOIS record shows no match for this specific subdomain. That means we can't confirm who controls it today or whether it's still actively maintained. If you were expecting to find a live SDK endpoint or documentation here, that's not what you'll get. The combination of a broken page and complete lack of transparency makes it hard to recommend visiting at all. If you need SDK resources from Mihoyo, go directly to their main site or developer portal. For now, treat nap-sdk.mihoyo.com as a dead link you can safely ignore.
No — nap-sdk.mihoyo.com doesn't look safe
In plain English
This site is currently dead in the water—it returns a 404 error with no usable content. With zero contact info, no about page, and no legal disclosures, there's no way to know who's behind this subdomain or what they intend. Unless you have a specific reason to believe it's an old SDK endpoint from the legitimate Mihoyo company, there is no reason to engage with it.
What you should do now
Don't panic. These steps limit the damage, and the sooner you take them the better.
Don't enter any details
No passwords, card numbers or personal information — even if the site looks professional.
Close the tab
Especially if you got here from an email, text message or social media ad.
Already paid? Call your bank
Contact your bank or card provider right away. They can often stop or reverse a recent payment.
Warn others
Report the site and share this check with anyone who sent you the link.
Where the score comes from
The site has a valid SSL certificate from a trusted issuer and passes Google Web Risk checks, but it accepts outdated TLS versions that have known flaws. Since the page returns a 404 error, the actual security of any served content is untestable.
This subdomain is part of the well-known Mihoyo (HoYoverse) family, but the WHOIS record for the specific subdomain shows no match, and there is no ownership disclosure. That's ambiguous—you can't verify who controls this exact endpoint.
No blacklist hits and no malware flags are good signs, but the site is not ranked and has no meaningful web archive history. A complete absence of third-party trust signals makes it impossible to gauge its reputation.
There is no contact information, no about page, no social media links, and missing branding like a favicon. For any site that expects visitors to trust it, this level of anonymity is a red flag.
No privacy policy or terms of service are present. While this is a subdomain that might serve a technical SDK function, the lack of legal pages means visitors have no recourse or understanding of data handling.
DNS resolution works and the site is hosted on a reputable network (Alibaba). But it lacks DNSSEC and email handling capabilities, and missing basic security headers beyond one. Acceptable for a subdomain, but not robust.
What we checked
Think this verdict is wrong?
Site owners can request a fresh scan. Scores update automatically as signals change.