What powers 
leuchtturm1917.com?
Last seen Aug 2026 · 17 technologies across 12 categories
Advertising
Analytics
Ecommerce
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
Security
Tag managers
UI frameworks
Web servers
Webmail
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
AI Crawlers
No AI crawlers blocked
Audience
- 52% phone
- 46% desktop
- 3% tablet
United States
Italy
Netherlands
Germany
Belgium
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #321,786 of all domains
98 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (EN)
- Weight: 18.6 MB · 56 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- LEUCHTTURM1917
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on DE-FIRSTCOLO firstcolo.net (31.172.90.100)
- DNS: seceidos.com
- Email: Mimecast
- Email security: SPF (soft fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,371,853, 6 hosts
- Verified with: Apple Business, Microsoft 365, Zoho
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.leuchtturm1917.com | 14 |
| configurator.leuchtturm1917.com | 9 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft Advertising May 2026
- detected Microsoft Clarity Nov 2025