What powers 
zwh.de?
Last seen Sep 2026 · 33 technologies across 18 categories
Analytics
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Page builders
Performance
Programming languages
UI frameworks
Video players
Web servers
Webmail
WordPress plugins
WordPress themes
AI Crawlers
Blocks 31 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-CloudVertexBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- PanguBot Blocked
- SBIntuitionsBot Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- Applebot Blocked
- Claude-SearchBot Blocked
- DuckAssistBot Blocked
- OAI-SearchBot Blocked
- PerplexityBot Blocked
- PetalBot Blocked
- YouBot Blocked
User-request fetchers
- ChatGPT-User Blocked
- Claude-User Blocked
- meta-externalfetcher Blocked
- MistralAI-User Blocked
- Perplexity-User Blocked
The other 2 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 perplexitybot added to robots.txt
- Oct 2026 webzio-extended added to robots.txt
- Oct 2026 meta-externalfetcher added to robots.txt
- Oct 2026 googleother added to robots.txt
- Oct 2026 img2dataset added to robots.txt
- Oct 2026 gptbot added to robots.txt
AI Crawlers
31 of 33 AI crawlers blocked
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.78 / 10 · ranked #268,308 of all domains
100 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- Weight: 5.4 MB · 113 requests
- WordPress theme: hello-elementor (child: hello-theme-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Zentralstelle für die Weiterbildung im Handwerk e. V. (Zentralstelle für die Weiterbildung im Handwerk on Wikidata)
- Founded: 1997
- Country: Germany
- Profiles: Facebook, Instagram, YouTube, LinkedIn
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on netcup (152.53.128.100)
- DNS: netcup.net
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: ZeroSSL, ECDSA P256, wildcard, expires Oct 2026
- Common Crawl link graph: rank 2,379,981, 13 hosts
- Verified with: Apple Business
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| zwh.de | 22 |
| hwk-bls.zwh.de | 15 |
| karlsruhe.zwh.de | 14 |
| zls.zwh.de | 10 |
| bbb2.zwh.de | 3 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped jsDelivr Sep 2026
- dropped Laravel Sep 2026
- dropped Livewire Sep 2026
- dropped MathJax Sep 2026
- detected Apple iCloud Mail Aug 2026
- detected jsDelivr Jul 2026
- detected MathJax Jul 2026
- dropped Cloudflare May 2026
- dropped Cloudflare Bot Management May 2026
- detected Dropzone Feb 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- detected MediaElement.js Nov 2025
- detected OWL Carousel Nov 2025