What powers 
wichern.de?
Last seen Sep 2026 · 22 technologies across 14 categories
Analytics
CDN
CMS
Databases
Hosting
JavaScript libraries
Miscellaneous
Operating systems
Payment processors
Performance
Programming languages
Security
Web servers
WordPress plugins
AI Crawlers
Blocks 3 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- CCBot Blocked
- GPTBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 30 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
3 of 33 AI crawlers blocked
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.44 / 10 · ranked #956,398 of all domains
28 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 0.8 MB · 36 requests
- WordPress theme: twentytwelve (child: wichernverlag) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on STRATO (81.169.145.165, IPv6)
- DNS: STRATO
- Email: STRATO
- Email security: no SPF record, no DMARC record
- SSL: Sectigo, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 233,879
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Cloudflare Jun 2026
- detected Cloudflare Bot Management Jun 2026
- dropped Cloudflare Apr 2026
- dropped Cloudflare Bot Management Apr 2026