What powers 
hsk.de?
Last seen Aug 2026 · 14 technologies across 11 categories
CDN
Amazon S3
since May 2022
Mailjet
since Jul 2024
Font scripts
Font Awesome
since Oct 2025
IaaS
Google Cloud
since Apr 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since May 2022
Performance
Google Cloud Trace
since Apr 2022
Security
HSTS
since Sep 2022
Webmail
Apple iCloud Mail
since Jan 2023
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 49% phone
- 44% desktop
- 6% tablet
Germany
Austria
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.74 / 10 · ranked #282,711 of all domains
82 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Google
- Weight: 8.4 MB · 115 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on UDAG (89.31.143.90)
- DNS: udag.de
- Email: Barracuda
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Google Trust Services, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 6,947,763, 9 hosts
- Verified with: Apple Business, Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped jQuery Nov 2025
- dropped Swiper Nov 2025
- detected Font Awesome Oct 2025
- detected lit-element Oct 2025
- detected lit-html Oct 2025
- detected Lodash Oct 2025
- detected Svelte Oct 2025
- detected Vue.js Oct 2025