What powers 
wb-duisburg.de?
Last seen Sep 2026 · 24 technologies across 14 categories
Advertising
Analytics
CMS
Cookie compliance
Development
JavaScript frameworks
JavaScript libraries
Miscellaneous
Performance
Programming languages
Search engines
UI frameworks
Web servers
Webmail
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 89% phone
- 8% desktop
- 3% tablet
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.21 / 10 · ranked #451,004 of all domains
80 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 100 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- Weight: 2.3 MB · 53 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Wirtschaftsbetriebe Duisburg
- Country: Germany
From Wikidata (CC0).
Infrastructure
- Hosted on DVV-GMBH-AS (147.28.52.173)
- DNS: kuhlma-it.de
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC reject
- SSL: Sectigo, RSA 2048, wildcard, expires Nov 2026
- Common Crawl link graph: rank 9,547,751, 7 hosts
- Verified with: Apple Business, Atlassian, Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| wb-duisburg.de | 20 |
| www.wb-duisburg.de | 20 |
| www.stadtleben.wb-duisburg.de | 8 |
| sperrgut.wb-duisburg.de | 6 |
Full technology history →
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