fyun.cc website report
DNS安全卫士·网笃软件|fyun.cc
Last scanned
Overall score
Fair
About fyun.cc
fyun.cc is a website. It describes itself as “DNS安全卫士是网笃软件提供的互联网家谱服务，具备强大的DNS验证，防劫持等功能。网笃软件为云家谱提供永久性互联网数据服务，并对客户的隐私进行严格保护，请牢记唯一服务网址：fyun.cc”.
Score profile
Top issues to fix
14 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
+8 more issues — details in the sections below.
How it compares
fyun.cc scores higher overall than 10% of the 163,243 sites we have scanned.
vs. All scanned sites
163,243 sitesThe dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.
Technology stack
fyun.cc is built with jQuery and Nginx.
Hosting & DNS
- IP address
- —
- ASN
- —
- IPv6
- Not supported
- HTTP
- HTTP/2
Show DNS record values
TXT record contents are not republished; only their count is shown.
Security
fyun.cc uses TLS 1.3 with a certificate valid for 55 more days and sets 0 of 6 recommended security headers.
Security headers0 of 6 set
- HSTSForces HTTPS
- CSPBlocks injected scripts
- X-Frame-OptionsStops clickjacking
- X-Content-TypeStops MIME sniffing
- Referrer-PolicyLimits URL leakage
- Permissions-PolicyRestricts browser features
TLS certificate
- Names covered
- 1
- Cookies set
- 0
Email security
fyun.cc scores F for email security, with no SPF record and no DMARC policy.
- SPFNot set
No SPF record: anyone can claim to send mail from this domain.
- DMARCNot set
No DMARC policy: forged mail is not told to be rejected.
- MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
- BIMINot set
Not published (optional).
Performance & carbon
fyun.cc scores 100/100 for performance, with an estimated load time of 0.3 s. A visit emits an estimated 0.16 g of CO2 (grade A).
Page weight
- HTML 4.0 KB
- JavaScript 400 KB
- CSS 23.0 KB
- Est. load
- 264 ms
- Response
- 264 ms
- Scripts / CSS
- 10 / 6
Carbon per visitA
0.16 g CO2 per uncached view
Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.
SEO & accessibility
fyun.cc scores 55/100 for SEO and 50/100 for accessibility, with 7 SEO issues to fix.
Heading structure
No H1 found.
Image alt text
1 images · 1 without alt text · 0 lazy-loaded
Links
- Internal 7
- External 2
- Broken 1
SEO issues7
- Meta description longer than 160 characters
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues3
- Over half of images are missing alt text
- No H1 heading found
- Missing <html lang> attribute
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- DNS安全卫士·网笃软件|fyun.cc
- Description
- DNS安全卫士是网笃软件提供的互联网家谱服务，具备强大的DNS验证，防劫持等功能。网笃软件为云家谱提供永久性互联网数据服务，并对客户的隐私进行严格保护，请牢记唯一服务网址：fyun.cc
- Canonical
- Language
- Robots meta
Crawl files
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
Structured data
No JSON-LD types declared.
- Microdata items
- 0
- RDFa items
- 0
Scan
- Final URL
- https://fyun.cc
- HTTP status
- 200
- Redirects
- https://fyun.cc
- Scanned
- Aug 24, 2026, 1:23 PM
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Frequently asked questions about fyun.cc
- What is fyun.cc?
- fyun.cc is a website. It describes itself as “DNS安全卫士是网笃软件提供的互联网家谱服务，具备强大的DNS验证，防劫持等功能。网笃软件为云家谱提供永久性互联网数据服务，并对客户的隐私进行严格保护，请牢记唯一服务网址：fyun.cc”.
- What technology does fyun.cc use?
- fyun.cc is built with jQuery and Nginx.
- Is fyun.cc secure?
- fyun.cc uses TLS 1.3 with a certificate valid for 55 more days and sets 0 of 6 recommended security headers.
- Is fyun.cc protected against email spoofing?
- fyun.cc scores F for email security, with no SPF record and no DMARC policy.
- How does fyun.cc compare with similar sites?
- fyun.cc scores higher overall than 10% of the 163,243 sites we have scanned.
- What is fyun.cc's overall score?
- fyun.cc has an overall SiteGraph score of 68/100, combining SEO (55), performance (100), security (65) and accessibility (50).
Open Graph & Twitter