What powers 
rudolf-mueller.de?
Last seen Sep 2026 · 41 technologies across 19 categories
Advertising
Appointment scheduling
CDN
Cookie compliance
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
LMS
Miscellaneous
Operating systems
Programming languages
Security
Tag managers
UI frameworks
Video players
Web 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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 * added to robots.txt
- Oct 2026 * removed from robots.txt
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #326,577 of all domains
61 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 25 ms |
| CLS | 0.3 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- CDN: Cloudflare
- Weight: 0.6 MB · 71 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Verlagsgesellschaft Rudolf Müller
- Founded: 1840
- Country: Germany
From Wikidata (CC0).
Infrastructure
- Hosted on COLT COLT Technology Services Group Limited (212.161.62.20, IPv6)
- DNS: netcologne.de
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 1,943,846, 11 hosts
- Verified with: Apple Business, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| akademie.rudolf-mueller.de | 14 |
| www.rudolf-mueller.de | 13 |
| umfragen.rudolf-mueller.de | 10 |
| www.presseservice.rudolf-mueller.de | 10 |
| architektur.rudolf-mueller.de | 9 |
| werben.rudolf-mueller.de | 9 |
| survey.rudolf-mueller.de | 3 |
| newsletter-planen.rudolf-mueller.de | 2 |
| xaver.rudolf-mueller.de | 2 |
Full technology history →
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Recent changes
- detected Alpine.js Jul 2026
- detected Calendly Jul 2026
- detected Cloudflare Jul 2026
- detected Google Tag Manager Jul 2026
- detected HTTP/3 Jul 2026
- detected Nginx Jul 2026
- detected RSS Jul 2026
- detected Ruby Jul 2026
- detected Ruby on Rails Jul 2026
- detected Twitch Player Jul 2026
- detected Webpack Jul 2026
- dropped Hammer.js Mar 2026
- dropped MySQL Dec 2025
- dropped WordPress Dec 2025
- dropped Yoast SEO Dec 2025
- dropped ZURB Foundation Dec 2025