What powers 21-5.com?
Last seen Jun 2026 · 17 technologies across 12 categories
Advertising
Microsoft Advertising
since Oct 2024
Analytics
Google Analytics
since Dec 2023
Linkedin Insight Tag
since Dec 2023
CDN
Cloudflare
since Dec 2023
Cookie compliance
JavaScript frameworks
JavaScript libraries
Swiper
since May 2025
Miscellaneous
Open Graph
since Dec 2023
Webpack
since Dec 2023
Performance
Priority Hints
since Feb 2025
Programming languages
Node.js
since Dec 2023
Security
Cloudflare Bot Management
since May 2024
UI frameworks
Headless UI
since Dec 2023
Tailwind CSS
since Dec 2023
Webmail
Microsoft 365
since Dec 2023
Audience
- 50% desktop
- 50% phone
United Kingdom
Netherlands
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.61 / 10 · ranked #21,813,393 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 44.6 MB · 57 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped Sentry May 2026
- detected Linkedin Insight Tag Mar 2026
- detected Next.js App Router Mar 2026
- detected Priority Hints Mar 2026
- dropped Azure Feb 2026
- dropped Cloudflare Browser Insights Feb 2026
- dropped HTTP/3 Feb 2026
- detected Cloudflare Browser Insights Nov 2025