What powers 21online.app?
Last seen Jun 2026 · 21 technologies across 12 categories
CDN
Cloudflare
since Oct 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Windows Server
since Oct 2022
PaaS
Performance
Priority Hints
since Mar 2025
Programming languages
Node.js
since Mar 2025
Security
HSTS
since Mar 2025
UI frameworks
Web frameworks
Microsoft ASP.NET
since Aug 2022
Web servers
Audience
- 71% desktop
- 28% phone
- 1% tablet
Portugal
Spain
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.64 / 10 · ranked #21,205,851 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 225 ms |
| CLS | 0.1 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Portuguese
- CDN: Vercel
- Weight: 2.1 MB · 92 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| 21online.app | 14 |
| m.21online.app | 6 |
| crm.21online.app | 5 |
Full technology history →
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Recent changes
- dropped Vercel Speed Insights Apr 2026
- detected Vercel Speed Insights Aug 2025