What technology does ens-lyon.fr use?

ens-lyon.fr is built with Apache.

Is ens-lyon.fr secure (HTTPS)?

Yes. ens-lyon.fr uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 22, 2026.

Who hosts ens-lyon.fr?

ens-lyon.fr is hosted on FR-LyRES - Renater, EU.

What is ens-lyon.fr's SEO score?

ens-lyon.fr scored 35/100 for SEO in the latest analysis (poor).

What is ens-lyon.fr's overall website score?

ens-lyon.fr has an overall SiteGraph score of 57/100, combining SEO, performance, security, and accessibility.

ens-lyon.fr

Last scanned Jul 25, 2026, 4:25 PM · 3 views

Overall score

Fair

Summary

This website uses Apache hosted on FR-LyRES - Renater, EU. SEO is poor (35/100) and accessibility is good (75/100). Security scores poor (25/100) and performance excellent (100/100). Top issue: Missing <title>.

France

Hosted on FR-LyRES - Renater, EU

Top issues to fix

14 issues found · 6 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing title tag
SEO
Add a unique, descriptive <title> tag — it's the single most important on-page SEO element.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

+8 more issues — details in the sections below.

SEO

8 issue(s) found

100

Performance

356 ms

Security

HTTPS & header checks

Accessibility

3 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.

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: FR-LyRES - Renater, EU
CDN provider: —
IP address: 140.77.168.21
ASN: AS1945 (FR-LyRES - Renater, EU)

DNS records

Type	Value
A	140.77.168.21
AAAA	—
MX	mx2.relay.renater.fr mx1.relay.renater.fr
TXT	v=spf1 include:spf.ens-lyon.fr +mx -all MS=F3E66FBE52E528A11B1F4DB8C7BFDDAFFD6931F1 google-site-verification=b4X2I2_m4paDIdixn4UlYuBxGcNOnPMZWi1jycPZ5p4 atlassian-domain-verification=xeE9GWbecoLzUAIWw3PlqtBIKzeYPQpT4Y1GqctRGb8AfZGDQwTFe8gYl2OwVG5Z
NS	dns.ens-lyon.fr ccpnvx.in2p3.fr dns2.ens-lyon.fr ccpntc3.in2p3.fr
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Hellenic Academic and Research Institutions CA
Subject: www.ens-lyon.fr
Valid from: Nov 22, 2025
Valid to: Nov 22, 2026
Days until expiry: 119
SAN domains: www.ens-lyon.fr, wwww.ens-lyon.fr, www2.ens-lyon.fr

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 0 · 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

52 B

Robots.txt & Sitemap

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

SEO issues

Missing <title>
Missing meta description
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://ens-lyon.fr
Final URL: https://ens-lyon.fr
HTTP status: 400
HTTP version: HTTP/1.1
Response time: 356 ms
HTML size: 52 B
Redirect chain: https://ens-lyon.fr

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does ens-lyon.fr use?: ens-lyon.fr is built with Apache.
Is ens-lyon.fr secure (HTTPS)?: Yes. ens-lyon.fr uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 22, 2026.
Who hosts ens-lyon.fr?: ens-lyon.fr is hosted on FR-LyRES - Renater, EU.
What is ens-lyon.fr's SEO score?: ens-lyon.fr scored 35/100 for SEO in the latest analysis (poor).
What is ens-lyon.fr's overall website score?: ens-lyon.fr has an overall SiteGraph score of 57/100, combining SEO, performance, security, and accessibility.