What powers callzo.io?
Last seen Jun 2026 · 17 technologies across 8 categories
Analytics
JavaScript frameworks
Next.js App Router
since Feb 2026
React
since Feb 2026
Miscellaneous
PaaS
Vercel
since Feb 2026
Performance
Priority Hints
since Feb 2026
Programming languages
Node.js
since Feb 2026
Security
HSTS
since Feb 2026
UI frameworks
Audience
India
Countries where the site has Chrome traffic, strongest markets first.
Core Web Vitals
| LCP | 3 s |
| INP | 150 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 3.2 MB · 41 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.callzo.io | 12 |
| app.callzo.io | 10 |