tjnu.edu.cn
403 Forbidden
Last scanned Jul 26, 2026, 3:19 PM
Overall score
Great
Summary
This website is hosted on CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN. SEO is fair (60/100) and accessibility is good (85/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.
- China
- Hosted on CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN
Top issues to fix
8 issues found · 2 high priority
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+2 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
325 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Meta tags
- Title
- 403 Forbidden
- Description
- Canonical
- Language
- Charset
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN
- CDN provider
- —
- IP address
- 60.30.105.32
- ASN
- AS4837 (CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert, Inc.
- Subject
- *.tjnu.edu.cn
- Valid from
- Apr 14, 2026
- Valid to
- Oct 29, 2026
- Days until expiry
- 95
- SAN domains
- *.tjnu.edu.cn, tjnu.edu.cn
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
0 scripts · 0 stylesheets
JS / CSS size
0 B · 0 B
Page size
199 B
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://tjnu.edu.cn
- Final URL
- https://tjnu.edu.cn
- HTTP status
- 403
- HTTP version
- HTTP/2
- Response time
- 325 ms
- HTML size
- 199 B
- Redirect chain
- https://tjnu.edu.cn
See something wrong on this report? Request a correction
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404 Not Found
Frequently asked questions
- What technology does tjnu.edu.cn use?
- We did not detect any specific technologies for tjnu.edu.cn in the latest scan.
- Is tjnu.edu.cn secure (HTTPS)?
- Yes. tjnu.edu.cn uses TLS 1.3 with a certificate issued by DigiCert, Inc., valid until Oct 29, 2026.
- Who hosts tjnu.edu.cn?
- tjnu.edu.cn is hosted on CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN.
- What is tjnu.edu.cn's SEO score?
- tjnu.edu.cn scored 60/100 for SEO in the latest analysis (fair).
- What is tjnu.edu.cn's overall website score?
- tjnu.edu.cn has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card