knaw.nl
403 Forbidden
Last scanned Jul 26, 2026, 5:17 AM · 1 view
Overall score
Fair
Summary
This website is hosted on AWS. SEO is fair (60/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on AWS
Top issues to fix
12 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.
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 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.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
134 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Contact
Email, phone, and address published on this site's own pages.
Source: https://knaw.nl/contact
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
- AWS
- CDN provider
- —
- IP address
- 75.2.96.239
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT | — |
| NS |
|
| CAA |
|
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Hellenic Academic and Research Institutions CA
- Subject
- knaw.nl
- Valid from
- Dec 11, 2025
- Valid to
- Dec 11, 2026
- Days until expiry
- 138
- SAN domains
- knaw.nl, www.knaw.nl, acc.cms21.knaw.nl, www.acc.cms21.knaw.nl, api.knaw.nl, www.api.knaw.nl, acc.knaw.nl, www.acc.knaw.nl, acc.api.knaw.nl, www.acc.api.knaw.nl, prd.api.knaw.nl, www.prd.api.knaw.nl, prd.cms21.knaw.nl, www.prd.cms21.knaw.nl, cms21.knaw.nl, www.cms21.knaw.nl
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- 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
2.0 KB
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
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://knaw.nl
- Final URL
- https://knaw.nl
- HTTP status
- 202
- HTTP version
- HTTP/2
- Response time
- 134 ms
- HTML size
- 2.0 KB
- Redirect chain
- https://knaw.nl
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does knaw.nl use?
- We did not detect any specific technologies for knaw.nl in the latest scan.
- Is knaw.nl secure (HTTPS)?
- Yes. knaw.nl uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Dec 11, 2026.
- Who hosts knaw.nl?
- knaw.nl is hosted on AWS.
- What is knaw.nl's SEO score?
- knaw.nl scored 60/100 for SEO in the latest analysis (fair).
- What is knaw.nl's overall website score?
- knaw.nl has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
- Is knaw.nl hiring?
- knaw.nl has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card