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SGSiteGraph

nlnetlabs.nl

NLnet Labs - Home

Last scanned Jul 21, 2026, 11:40 AM · 4 views

92

Overall score

Excellent

Top issues to fix

5 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • 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.

  • 1 broken link on the page

    SEO

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

Summary

Research & Development, Internet architecture, DNS, Routing, Stability and Security. This website uses Nginx hosted on HETZNER-AS - Hetzner Online GmbH, DE. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing canonical link.

80

SEO

3 issue(s) found

100

Performance

128 ms

90

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.

GitHubLinkedIn

Contact

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

Meta tags

Title
NLnet Labs - Home
Description
Research & Development, Internet architecture, DNS, Routing, Stability and Security.
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
NLnet Labs
og:description
Research & Development, Internet architecture, DNS, Routing, Stability and Security.
og:type
website
og:url
https://nlnetlabs.nl/

Twitter Card

twitter:card
summary
twitter:title
NLnet Labs
twitter:description
Research & Development, Internet architecture, DNS, Routing, Stability and Security.

Technologies

Detected frameworks, languages, and tools.

jQueryNginx

Hosting & CDN

CDN provider
—
IP address
128.140.76.106
ASN
AS24940 (HETZNER-AS - Hetzner Online GmbH, DE)

DNS records

TypeValue
A
  • 128.140.76.106
AAAA
  • 2a01:4f8:c0c:cdfa::1
MX
  • mxext1.mailbox.org
  • mxext4.mailbox.org
  • mxext2.mailbox.org
  • mxext3.mailbox.org
TXT
  • Stichting NLnet Labs zone
  • v=spf1 +a include:_spf.google.com include:mailbox.org ip4:185.49.140.0/22 ip6:2a04:b900::/29 ~all
  • 1password-site-verification=QAXPQAT46NGABHYNFZ5HGZUELQ
NS
  • ns1.sidn.nl
  • ns2.sidn.nl
  • ns.nlnetlabs.nl
  • anyns.pch.net
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
igor.nlnetlabs.nl
Valid from
Jul 19, 2026
Valid to
Oct 17, 2026
Days until expiry
88
SAN domains
igor.nlnetlabs.nl, nlnetlabs.nl, www.nlnetlabs.nl

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 0

Links

33 internal · 30 external · 1 broken

Images

30 total · 0 missing alt

Scripts / Styles

6 scripts · 3 stylesheets

JS / CSS size

175 KB · 280 KB

Page size

21.0 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.

Scan details

Requested URL
https://nlnetlabs.nl
Final URL
https://nlnetlabs.nl
HTTP status
200
HTTP version
HTTP/1.1
Response time
128 ms
HTML size
21.0 KB
Redirect chain
https://nlnetlabs.nl

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Frequently asked questions

What technology does nlnetlabs.nl use?
nlnetlabs.nl is built with jQuery, Nginx.
Is nlnetlabs.nl secure (HTTPS)?
Yes. nlnetlabs.nl uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 17, 2026.
Who hosts nlnetlabs.nl?
nlnetlabs.nl is hosted on HETZNER-AS - Hetzner Online GmbH, DE.
What is nlnetlabs.nl's SEO score?
nlnetlabs.nl scored 80/100 for SEO in the latest analysis (great).
What is nlnetlabs.nl's overall website score?
nlnetlabs.nl has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.