What powers 21.training?
Last seen Aug 2026 · 38 technologies across 18 categories
Analytics
Google Analytics
since Aug 2022
CMS
Cookie compliance
Cookie Information
since Aug 2022
Databases
MySQL
since Aug 2022
MailChimp
since Aug 2022
Font scripts
Twitter Emoji (Twemoji)
since Aug 2022
JavaScript frameworks
JavaScript libraries
LMS
Moodle
since Nov 2022
Miscellaneous
Babel
since Dec 2022
Open Graph
since Oct 2022
Popper
since Feb 2025
RSS
since Dec 2022
Webpack
since Nov 2025
Performance
Priority Hints
since Sep 2023
Programming languages
PHP
since Aug 2022
Security
Really Simple SSL & Security
since Apr 2024
reCAPTCHA
since Aug 2022
UI frameworks
Bootstrap
since Aug 2022
Video players
Web servers
Apache HTTP Server
since Aug 2022
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
Cookie Information plugin
since Aug 2022
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Aug 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.54 / 10 · ranked #2,431,668 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.2 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 2500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United Kingdom)
- Weight: 29.6 MB · 121 requests
- WordPress theme: flatsome (child: flatsome-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| 21.training | 30 |
| elearning.21.training | 14 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Yoast SEO Jul 2026
- dropped Chart.js Feb 2026
- dropped DataTables Feb 2026
- dropped FullCalendar Feb 2026
- dropped jQuery UI Feb 2026
- dropped Select2 Feb 2026
- dropped TinyMCE Feb 2026
- dropped TypeScript Feb 2026
- detected Webpack Nov 2025