What powers 21.com?
Last seen Aug 2026 · 49 technologies across 24 categories
A/B Testing
Optimizely
since Jul 2026
Analytics
Cloudflare Browser Insights
since May 2023
Google Analytics
since Jan 2019
Inspectlet
since May 2019
CDN
Amazon CloudFront
since Jun 2019
Cloudflare
since Jan 2019
CRM
Freshworks CRM
since Aug 2024
Development
Turbopack
since Jul 2026
Sendgrid
since Jul 2026
Font scripts
Google Font API
since Jul 2020
Issue trackers
Sentry
since Jul 2026
JavaScript frameworks
Next.js App Router
since Jul 2026
React
since Jul 2021
RxJS
since Jul 2026
Svelte
since Apr 2025
Zone.js
since Jan 2019
JavaScript libraries
LazySizes
since Apr 2025
Live chat
LiveChat
since Jul 2026
Load balancers
Amazon ALB
since Sep 2021
Miscellaneous
Operating systems
Windows Server
since Jul 2020
PaaS
Amazon Web Services
since Jun 2019
Performance
Priority Hints
since Jul 2026
Programming languages
Retargeting
Blue
since Dec 2024
Reverse proxies
Envoy
since Apr 2025
Security
Cloudflare Bot Management
since Nov 2024
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Jan 2019
UI frameworks
Web frameworks
Web servers
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 87% phone
- 13% desktop
Argentina
Germany
Morocco
Canada
Brazil
Tunisia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.93 / 10 · ranked #1,713,486 of all domains
46 referring domains · OpenPageRank
Search traffic
33 est. monthly organic visits (US)
1 keywords in Google's top 30
Core Web Vitals
| LCP | 5.1 s |
| INP | 1150 ms |
| CLS | 0.2 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Amazon CloudFront, Cloudflare
- Weight: 5.7 MB · 261 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| 21.com | 23 |
| www.21.com | 19 |
| partners.21.com | 14 |
| support.21.com | 13 |