dusu.org
404 Not Found
Last scanned Aug 5, 2026, 3:00 AM · 10 views
Overall score
Fair
Summary
This website is hosted on CNSERVERS - CNSERVERS LLC, US. SEO is fair (55/100) and accessibility is fair (60/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on CNSERVERS - CNSERVERS LLC, US
Top issues to fix
13 issues found · 5 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.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
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.
+7 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
218 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Score history
+2 overall since Jul 27, 2026
- Overall
- 70
- SEO
- 55
- Security
- 65
- Performance
- 100
- Accessibility
- 60
Meta tags
- Title
- 404 Not Found
- Description
- Canonical
- Language
- zh
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- CNSERVERS - CNSERVERS LLC, US
- CDN provider
- —
- IP address
- 162.209.196.60
- ASN
- AS40065 (CNSERVERS - CNSERVERS LLC, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- ZeroSSL GmbH
- Subject
- dusu.org
- Valid from
- Jul 26, 2026
- Valid to
- Oct 24, 2026
- Days until expiry
- 80
- SAN domains
- dusu.org, *.dusu.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
1 internal · 0 external · 1 broken
Images
1 total · 1 missing alt
Scripts / Styles
1 scripts · 0 stylesheets
JS / CSS size
209 B · 237 B
Page size
35 B
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 1
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://dusu.org
- Final URL
- https://dusu.org
- HTTP status
- 401
- HTTP version
- HTTP/2
- Response time
- 218 ms
- HTML size
- 35 B
- Redirect chain
- https://dusu.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does dusu.org use?
- We did not detect any specific technologies for dusu.org in the latest scan.
- Is dusu.org secure (HTTPS)?
- Yes. dusu.org uses TLS 1.3 with a certificate issued by ZeroSSL GmbH, valid until Oct 24, 2026.
- Who hosts dusu.org?
- dusu.org is hosted on CNSERVERS - CNSERVERS LLC, US.
- What is dusu.org's SEO score?
- dusu.org scored 55/100 for SEO in the latest analysis (fair).
- What is dusu.org's overall website score?
- dusu.org has an overall SiteGraph score of 70/100, combining SEO, performance, security, and accessibility.
- Has dusu.org's score changed over time?
- dusu.org's overall score has improved by 2 points (from 68 to 70) since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card