What powers 
chdn.lu?
Last seen Sep 2026 · 18 technologies across 13 categories
Caching
WordPress Super Cache
since Jan 2022
CMS
WordPress
since Jan 2022
Cookie compliance
OneTrust
since Aug 2023
Databases
MySQL
since Jan 2022
Font scripts
Twitter Emoji (Twemoji)
since Jan 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Aug 2023
Performance
Priority Hints
since Aug 2023
Programming languages
PHP
since Jan 2019
Security
HSTS
since Feb 2024
UI frameworks
Semantic UI
since Jul 2024
WordPress plugins
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 80% phone
- 17% desktop
- 3% tablet
Luxembourg
Germany
Belgium
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.55 / 10 · ranked #842,780 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- Weight: 2.3 MB · 59 requests
- WordPress theme: chdn2 · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- CHdN
- Profiles: Facebook
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on EPT-LU Entreprise des P. et T. Luxembourg (37.157.157.64)
- DNS: pt.lu
- Email: chdn.lu
- Email security: SPF (soft fail), DMARC reject
- SSL: DigiCert, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 2,645,785, 3 hosts
- Verified with: Cisco, Google, OpenAI
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.chdn.lu | 13 |
| rdv.chdn.lu | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025