Is yahoo.co.jp legit?
This site appears largely trustworthy with strong security and robust infrastructure signals, especially its email authentication. While bot protection hindered a full assessment of transparency, and page load time is a minor concern, the critical safety indicators are positive.
News & Media average: 80/100 · based on 32 sites
Checked: April 21, 2026 at 6:47 PM UTC
Is yahoo.co.jp a scam? Here's what we found.
The security posture is excellent, with a valid SSL certificate from a recognized issuer, modern TLS 1.3 encryption, and robust clickjacking protection. Google Web Risk also confirms no threats, indicating a safe browsing environment.
The WHOIS information is publicly available and clearly identifies 'LY Corporation' as the owner, which is a major Japanese entity. The domain has been established since 2019, showing longevity.
The site holds a high global Tranco rank, indicating significant traffic and established presence. It is clean on all DNS blacklists, reinforcing a positive reputation. The absence of a robots.txt and sitemap is minor for a site of this scale.
Transparency is somewhat hampered by bot protection preventing access to contact details, legal pages, and social media. While basic branding is present, a more open display of information would be beneficial.
The bot protection prevented verification of legal pages like privacy policies and terms of service, making a definitive compliance assessment difficult. However, as it's a major Japanese entity, general compliance is expected.
The infrastructure is well-configured with multiple IP addresses for DNS resolution and robust email authentication (SPF and DMARC). However, the slower page load time suggests potential optimization opportunities for server performance or hosting.
Signals Detected
This is one of the most visited websites globally
No structured data markup found
This business has no Trustpilot presence — not unusual for smaller or newer companies
Not found on any DNS blacklists
crt.sh returned status 502
Resolves to: 183.79.249.252, 182.22.24.252, 182.22.28.252, 182.22.16.123, 183.79.219.252, 183.79.250.251, 124.83.185.252, 183.79.249.124, 182.22.31.124, 124.83.184.124, 182.22.24.124, 182.22.16.251, 182.22.25.252, 182.22.25.124, 183.79.219.124, 182.22.31.252, 124.83.184.252, 124.83.185.124
Mail servers: mx5.mail.yahoo.co.jp., mx2.mail.yahoo.co.jp., mx3.mail.yahoo.co.jp., mx1.mail.yahoo.co.jp.
Domain has SPF email authentication configured
Domain has DMARC email authentication configured
DNS providers: ns12.yahoo.co.jp., ns02.yahoo.co.jp., ns01.yahoo.co.jp., ns11.yahoo.co.jp.
Valid certificate, expires in 226 days
Certificate issued by Cybertrust Japan Co., Ltd.
Connection uses TLS 1.3
Site has a favicon but no social sharing metadata
X-Frame-Options: SAMEORIGIN
No threats detected by Google Web Risk
No robots.txt file — common for small sites
No sitemap found — common for smaller sites
Could not query Wayback Machine
Website returned HTTP 403 — likely WAF or bot protection blocking automated checks. The site is online but restricts non-browser access.
Bot protection prevented page inspection
Bot protection prevented checking legal pages
Bot protection prevented page inspection
Slow page load — may indicate cheap hosting
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