What powers 
vier-tuerme-verlag.de?
Last seen Sep 2026 · 11 technologies across 10 categories
Advertising
Appointment scheduling
CMS
Cookie compliance
JavaScript libraries
Programming languages
Security
UI frameworks
Video players
Web servers
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.46 / 10 · ranked #938,535 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German (Germany)
- Weight: 1.6 MB · 62 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Vier Türme Verlag (Vier-Türme-Verlag on Wikidata)
- Founded: 1951
- Sector: publishing
- Country: Germany
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on netcup (152.53.121.148, IPv6)
- DNS: dns1.de
- Email: masterframe.de
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 3,121,325, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted