What technology does cairn.info use?

cairn.info is built with Apache.

Is cairn.info secure (HTTPS)?

Yes. cairn.info uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 16, 2026.

Who hosts cairn.info?

cairn.info is hosted on OCTOPUCE-AS - Octopuce s.a.r.l., FR.

What is cairn.info's SEO score?

cairn.info scored 50/100 for SEO in the latest analysis (fair).

What is cairn.info's overall website score?

cairn.info has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.

cairn.info

Last scanned Jul 24, 2026, 10:25 PM · 1 view

Overall score

Fair

Summary

This website uses Apache hosted on OCTOPUCE-AS - Octopuce s.a.r.l., FR. SEO is fair (50/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

France

Hosted on OCTOPUCE-AS - Octopuce s.a.r.l., FR

Top issues to fix

13 issues found · 4 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 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.
TLS certificate expires in 22 days
Security
Renew soon or enable auto-renewal to avoid a browser-warning outage.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

+7 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

434 ms

Security

HTTPS & header checks

Accessibility

1 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: OCTOPUCE-AS - Octopuce s.a.r.l., FR
CDN provider: —
IP address: 185.34.32.93
ASN: AS28855 (OCTOPUCE-AS - Octopuce s.a.r.l., FR)

DNS records

Type	Value
A	185.34.32.93
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	front.cairn.info
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: shs.cairn.info
Valid from: May 18, 2026
Valid to: Aug 16, 2026
Days until expiry: 22
SAN domains: shs.cairn.info

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: none · 2 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

2 scripts · 0 stylesheets

JS / CSS size

15.1 KB · 84 B

Page size

770 B

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 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://cairn.info
Final URL: https://shs.cairn.info/
HTTP status: 403
HTTP version: HTTP/2
Response time: 434 ms
HTML size: 770 B
Redirect chain: https://cairn.info → https://www.cairn.info/ → https://shs.cairn.info/

See something wrong on this report? Request a correction

Same technology stack

piwik.pro

Piwik PRO | Privacy-First Analytics & Data Activation Platform

wordpressapache

ELASTX - ELASTX AB, SE

kde.org

Home - KDE Community

apache

HETZNER-AS - Hetzner Online GmbH, DE

oreilly.com

O'Reilly Media - Technology and Business Training

apachejquery

RELIANCEJIO-IN - Reliance Jio Infocomm Limited, IN

meethue.com

Smart LED lights | Philips Hue IN

apachevue

BBIL-AP - BHARTI Airtel Ltd., IN

rns.com

Regulatory News Services (RNS) | LSEG

apache

AWS· CloudFront

cryoutcreations.eu

Free and Premium WordPress Themes • Cryout Creations

wordpressphpapache

LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL

Same hosting provider

eemi.com

Page d'accueil - eemi

wordpress

OCTOPUCE-AS - Octopuce s.a.r.l., FR

Frequently asked questions

What technology does cairn.info use?: cairn.info is built with Apache.
Is cairn.info secure (HTTPS)?: Yes. cairn.info uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 16, 2026.
Who hosts cairn.info?: cairn.info is hosted on OCTOPUCE-AS - Octopuce s.a.r.l., FR.
What is cairn.info's SEO score?: cairn.info scored 50/100 for SEO in the latest analysis (fair).
What is cairn.info's overall website score?: cairn.info has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.