What powers vhs-duisburg.de?

Last seen Aug 2026 · 11 technologies across 8 categories

Analytics

Matomo Analytics
since Aug 2023

CMS

TYPO3 CMS
since Jan 2023

Cookie compliance

Klaro
since Jan 2023

JavaScript libraries

core-js v3.6.5
since Jan 2023
jQuery v3.6.0
since Feb 2020
jQuery UI v1.12.1
since Jan 2023
Preact
since Jan 2023

Miscellaneous

Popper
since Jan 2023

Programming languages

PHP
since Feb 2020

Security

HSTS
since May 2023

UI frameworks

Bootstrap v4.6.1
since Jan 2023

AI Crawlers

Blocks 7 of 33 AI crawlers we track by name in its robots.txt, restricts 16 more. Checked Sep 2026.

Training crawlers

  • AI2Bot Blocked
  • Bytespider Blocked
  • CCBot Blocked
  • Diffbot Blocked
  • PanguBot Blocked
  • Webzio-Extended Blocked
  • Applebot-Extended Restricted
  • ClaudeBot Restricted
  • cohere-training-data-crawler Restricted
  • Google-CloudVertexBot Restricted
  • Google-Extended Restricted
  • GoogleOther Restricted
  • GPTBot Restricted
  • meta-externalagent Restricted

Search and AI assistants

  • PetalBot Blocked
  • Amazonbot Restricted
  • Applebot Restricted
  • DuckAssistBot Restricted
  • OAI-SearchBot Restricted
  • PerplexityBot Restricted
  • YouBot Restricted

User-request fetchers

  • ChatGPT-User Restricted
  • meta-externalfetcher Restricted

The other 10 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

AI Crawlers

7 of 33 AI crawlers blocked

Full breakdown

Audience

  • 80% phone
  • 15% desktop
  • 6% tablet
  • Germany

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

3.70 / 10 · ranked #763,577 of all domains

55 referring domains · OpenPageRank

Core Web Vitals

LCP5.5 s
INP75 ms
CLS0
TTFB5200 ms

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: German
  • Weight: 7.5 MB · 42 requests
  • Structured data: Microdata, Twitter Cards

Homepage as crawled by the HTTP Archive, Sep 2026.

Infrastructure

  • Hosted on DVV-GMBH-AS (147.28.52.171)
  • DNS: duit.de
  • Email: duit.de
  • Email security: no SPF record, no DMARC record, CAA
  • SSL: Sectigo, RSA 4096, expires Jan 2027
  • Common Crawl link graph: rank 3,088,531, 3 hosts

DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted

Subdomains

HostTechs
vhs-duisburg.de 11
www.vhs-duisburg.de 11

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