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SGSiteGraph

duo.nl

DUO - Particulier

Last scanned Jul 26, 2026, 5:35 AM

92

Overall score

Excellent

Summary

Informatie voor studenten, terugbetalers en leraren. This website is hosted on SURFNET-NL - SURF B.V., NL. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (90/100). Top issue: Missing canonical link.

Informatie voor studenten, terugbetalers en leraren. Informatie over studiefinanciering, studieschuld, reizen, lesgeld, diploma’s en staatsexamens.

Netherlands
Hosted on SURFNET-NL - SURF B.V., NL

Top issues to fix

4 issues found

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 2 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

80

SEO

3 issue(s) found

90

Performance

302 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Informatie voor studenten, terugbetalers en leraren. Informatie over studiefinanciering, studieschuld, reizen, lesgeld, diploma’s en staatsexamens.

Contact

Email, phone, and address published on this site's own pages.

Source: https://duo.nl/particulier/contact/index.jsp

Meta tags

Title
DUO - Particulier
Description
Informatie voor studenten, terugbetalers en leraren. Informatie over studiefinanciering, studieschuld, reizen, lesgeld, diploma’s en staatsexamens.
Canonical
Language
nl
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
DUO - Particulier
og:description
Informatie voor studenten, terugbetalers en leraren. Informatie over studiefinanciering, studieschuld, reizen, lesgeld, diploma’s en staatsexamens.
og:type
—
og:url
https://www.duo.nl/particulier/index.jsp

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

CDN provider
—
IP address
194.171.77.135
ASN
AS1103 (SURFNET-NL - SURF B.V., NL)

DNS records

TypeValue
A
  • 194.171.77.135
AAAA
  • 2001:67c:262c:860::135
MX
  • grnms101.duo.nl
  • grnms102.duo.nl
TXT—
NS
  • ns1.surfnet.nl
  • ns2.surfnet.nl
  • ns3.surfnet.nl
  • ns1.zurich.surf.net
CAA
  • 0 issuewild "digicert.com"
  • 0 issue "certsign.ro"
  • 0 issue "www.digicert.com"
  • 0 issue "kpn.com"
  • 0 issue "quovadisglobal.com"
  • 0 issue "www.pkioverheid.nl"
  • 0 issue "digicert.com"
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
DigiCert Ireland Limited
Subject
www.duo.nl
Valid from
Jul 9, 2026
Valid to
Jan 23, 2027
Days until expiry
181
SAN domains
www.duo.nl, duo.nl, data.duo.nl, mijnduo.nl, www.mijnduo.nl, diplomaregister.nl, www.diplomaregister.nl, examenloket.nl, www.examenloket.nl, bron.nl, www.bron.nl, bezwaarschriftenocw.nl, www.bezwaarschriftenocw.nl, rio-kennisbank.duo.nl, mijndiploma.nl, www.mijndiploma.nl, mijndiplomas.nl, www.mijndiplomas.nl, mijnwft.nl, www.mijnwft.nl, werkenbijduo.nl, www.werkenbijduo.nl

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 25 · H3 0

Links

49 internal · 1 external · 2 broken

Images

4 total · 0 missing alt

Scripts / Styles

6 scripts · 2 stylesheets

JS / CSS size

234 KB · 531 KB

Page size

28.8 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing canonical link
  • No structured data (JSON-LD) found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Careers

View careers page

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://duo.nl
Final URL
https://duo.nl/particulier/
HTTP status
200
HTTP version
HTTP/1.1
Response time
302 ms
HTML size
28.8 KB
Redirect chain
https://duo.nl → https://duo.nl/particulier/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does duo.nl use?
We did not detect any specific technologies for duo.nl in the latest scan.
Is duo.nl secure (HTTPS)?
Yes. duo.nl uses TLS 1.3 with a certificate issued by DigiCert Ireland Limited, valid until Jan 23, 2027.
Who hosts duo.nl?
duo.nl is hosted on SURFNET-NL - SURF B.V., NL.
What is duo.nl's SEO score?
duo.nl scored 80/100 for SEO in the latest analysis (great).
What is duo.nl's overall website score?
duo.nl has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
Is duo.nl hiring?
duo.nl has a careers page; check it directly for current openings.