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cesnet.cz

CESNET | zájmové sdružení právnických osob

Last scanned Jul 26, 2026, 5:18 AM · 1 view

82

Overall score

Great

Summary

This website uses Apache hosted on CESNET2 - CESNET z.s.p.o., CZ. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (75/100). Top issue: Missing meta description.

CZ
Hosted on CESNET2 - CESNET z.s.p.o., CZ

Top issues to fix

5 issues found · 2 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 meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No structured data (JSON-LD) found

    SEO

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

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • sitemap.xml not found

    SEO

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

70

SEO

4 issue(s) found

75

Performance

459 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.

FacebookYouTubeX (Twitter)InstagramYouTube

Meta tags

Title
CESNET | zájmové sdružení právnických osob
Description
Canonical
https://www.cesnet.cz/
Language
cs
Charset
utf-8
Viewport
width=device-width, initial-scale=1, maximum-scale=1, shrink-to-fit=no
Robots meta
Manifest
https://www.cesnet.cz/site.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

PHPjQueryGoogle AnalyticsApache

Hosting & CDN

CDN provider
—
IP address
78.128.246.93
ASN
AS2852 (CESNET2 - CESNET z.s.p.o., CZ)

DNS records

TypeValue
A
  • 78.128.246.93
AAAA
  • 2001:718:ff05:108::93
MX
  • ag2.cesnet.cz
  • ag1.cesnet.cz
TXT
  • v=spf1 -all
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Hellenic Academic and Research Institutions CA
Subject
www.cesnet.cz
Valid from
Feb 20, 2026
Valid to
Feb 20, 2027
Days until expiry
206
SAN domains
www.cesnet.cz, nren.cz, cesnet.cz, www.nren.cz, www.ten.cz

Security headers

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

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 18

Links

37 internal · 16 external · 0 broken

Images

85 total · 0 missing alt

Scripts / Styles

20 scripts · 2 stylesheets

JS / CSS size

1.0 MB · 176 KB

Page size

75.9 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
2
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://cesnet.cz
Final URL
https://www.cesnet.cz/
HTTP status
200
HTTP version
HTTP/2
Response time
458 ms
HTML size
75.9 KB
Redirect chain
https://cesnet.cz → https://www.cesnet.cz/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does cesnet.cz use?
cesnet.cz is built with PHP, jQuery, Google Analytics, Apache.
Is cesnet.cz secure (HTTPS)?
Yes. cesnet.cz uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 20, 2027.
Who hosts cesnet.cz?
cesnet.cz is hosted on CESNET2 - CESNET z.s.p.o., CZ.
What is cesnet.cz's SEO score?
cesnet.cz scored 70/100 for SEO in the latest analysis (fair).
What is cesnet.cz's overall website score?
cesnet.cz has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.