What powers 
lehrer-werden.nrw?
Last seen Sep 2026 · 17 technologies across 12 categories
Analytics
Etracker
since May 2021
CDN
cdnjs
since Oct 2024
Cloudflare
since Oct 2024
CMS
Font scripts
JavaScript frameworks
Stimulus
since Oct 2024
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Webpack
since Oct 2024
Programming languages
PHP
since Jan 2019
Security
HSTS
since Sep 2022
UI frameworks
Video players
YouTube
since Feb 2020
Web servers
Apache HTTP Server
since Jan 2019
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.59 / 10 · ranked #819,833 of all domains
52 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 300 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 1.4 MB · 31 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on IT-NRW (93.184.134.157)
- DNS: it.nrw
- Email: nrw.de
- Email security: SPF (neutral), no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 2,353,345, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.lehrer-werden.nrw | 11 |
| www.tools.lehrer-werden.nrw | 8 |