What powers 
diss-duisburg.de?
Last seen Sep 2026 · 16 technologies across 12 categories
CMS
WordPress
since Apr 2019
Databases
MySQL
since Apr 2019
Font scripts
Twitter Emoji (Twemoji)
since Apr 2019
Hosting
IONOS
since Aug 2022
JavaScript libraries
Miscellaneous
RSS
since Dec 2022
Page builders
WordPress Site Editor
since Feb 2026
Performance
Priority Hints
since Sep 2023
Programming languages
PHP
since Apr 2019
Web servers
Apache HTTP Server
since Apr 2019
WordPress plugins
WP-Optimize
since Feb 2026
WordPress themes
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
- 62% phone
- 38% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.72 / 10 · ranked #300,397 of all domains
147 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| CLS | 0 |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 0.8 MB · 28 requests
- WordPress theme: twentytwentyfour (child: diss-theme) · all themes
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Duisburger Institut für Sprach- und Sozialforschung
- Founded: 1987
- Country: Germany
From Wikidata (CC0).
Infrastructure
- Hosted on IONOS (217.160.0.207, IPv6)
- Email: no MX record returned, SPF names IONOS
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Sectigo, RSA 2048, wildcard, expires Apr 2027
- Common Crawl link graph: rank 531,658, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| diss-duisburg.de | 13 |
| www.diss-duisburg.de | 11 |