ou.nl
Homepage - Open Universiteit - Open Universiteit
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Fair
Summary
Universitair studeren, zoals jij dat wilt. This website uses Apache hosted on SURFNET-NL - SURF B.V., NL. SEO is good (80/100) and accessibility is fair (60/100). Security scores excellent (90/100) and performance good (75/100). Top issue: No H1 heading found.
Universitair studeren, zoals jij dat wilt. Van korte studie tot volledige bachelor en master. Persoonlijk en online, prima te combineren met werk en privé.
- Netherlands
- Hosted on SURFNET-NL - SURF B.V., NL
Top issues to fix
5 issues found · 3 high priority
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.
3 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
SEO
2 issue(s) found
Performance
430 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Universitair studeren, zoals jij dat wilt. Van korte studie tot volledige bachelor en master. Persoonlijk en online, prima te combineren met werk en privé.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Homepage - Open Universiteit - Open Universiteit
- Description
- Universitair studeren, zoals jij dat wilt. Van korte studie tot volledige bachelor en master. Persoonlijk en online, prima te combineren met werk en privé.
- Canonical
- https://www.ou.nl/home
- Language
- nl-NL
- Charset
- UTF-8
- Viewport
- initial-scale=1.0, width=device-width
- Robots meta
- index, follow
- Manifest
- https://www.ou.nl/o/corp-theme/images/favicon/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- SURFNET-NL - SURF B.V., NL
- CDN provider
- —
- IP address
- 145.20.124.148
- ASN
- AS1103 (SURFNET-NL - SURF B.V., NL)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT | — |
| NS |
|
| CAA | — |
| CNAME |
|
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Hellenic Academic and Research Institutions CA
- Subject
- ou.nl
- Valid from
- Oct 31, 2025
- Valid to
- Oct 31, 2026
- Days until expiry
- 96
- SAN domains
- ou.nl, www.ou.nl
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 3 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 1
Links
115 internal · 3 external · 0 broken
Images
12 total · 12 missing alt
Scripts / Styles
33 scripts · 6 stylesheets
JS / CSS size
1.4 MB · 1.0 MB
Page size
152 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 17
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- No H1 heading found
- No structured data (JSON-LD) found
Accessibility issues
- Over half of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://ou.nl
- Final URL
- https://www.ou.nl/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 427 ms
- HTML size
- 152 KB
- Redirect chain
- https://ou.nl → https://www.ou.nl/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does ou.nl use?
- ou.nl is built with Bootstrap, jQuery, Apache.
- Is ou.nl secure (HTTPS)?
- Yes. ou.nl uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Oct 31, 2026.
- Who hosts ou.nl?
- ou.nl is hosted on SURFNET-NL - SURF B.V., NL.
- What is ou.nl's SEO score?
- ou.nl scored 80/100 for SEO in the latest analysis (great).
- What is ou.nl's overall website score?
- ou.nl has an overall SiteGraph score of 77/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card