What powers 
yellow.lu?
Last seen Sep 2026 · 25 technologies across 17 categories
Analytics
CDN
JavaScript frameworks
JavaScript libraries
Maps
Miscellaneous
PaaS
Programming languages
Rich text editors
RUM
Security
Tag managers
UI frameworks
Web frameworks
Webmail
Widgets
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
- Sep 2026 claudebot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 73% phone
- 24% desktop
- 3% tablet
Luxembourg
Belgium
Germany
France
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.85 / 10 · ranked #690,485 of all domains
35 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 3900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: French
- CDN: Cloudflare
- Weight: 7.0 MB · 97 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.26.10.49)
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record
- SSL: Google Trust Services, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 1,932,482, 31 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| yellow.lu | 25 |
| www.yellow.lu | 22 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Google Analytics Jul 2026
- detected Google Tag Manager Jul 2026
- detected Render Jul 2026