What powers 
channel21.de?
Last seen Sep 2026 · 6 technologies across 5 categories
Marketing automation
HubSpot
since Jan 2026
Performance
Priority Hints
since Oct 2024
UI frameworks
Tailwind CSS
since Oct 2024
Web servers
Apache HTTP Server
since Mar 2018
Webmail
Apple iCloud Mail
since Jan 2026
Microsoft 365
since Aug 2022
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
- 74% phone
- 15% desktop
- 11% tablet
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.15 / 10 · ranked #478,404 of all domains
60 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 0.0 MB · 6 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ONE-NETWORK (77.75.250.12)
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 7,924,800, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| channel21.de | 6 |
| www.channel21.de | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Cloudflare Jul 2026
- dropped Cloudflare Bot Management Jul 2026
- dropped core-js Jul 2026
- dropped HSTS Jul 2026
- dropped Lodash Jul 2026
- dropped Microsoft Advertising Jul 2026
- dropped Next.js Jul 2026
- dropped Next.js App Router Jul 2026
- dropped Node.js Jul 2026
- dropped PayPal Jul 2026
- dropped React Jul 2026
- dropped Sentry Jul 2026
- dropped Usercentrics Jul 2026
- dropped Webpack Jul 2026