What powers codegym.vn?
Last seen Sep 2026 · 73 technologies across 27 categories
Analytics
Authentication
Caching
CDN
CMS
Databases
Font scripts
Hosting
JavaScript frameworks
JavaScript libraries
Live chat
Marketing automation
Miscellaneous
Mobile frameworks
Page builders
Performance
Programming languages
Rich text editors
Security
Tag managers
UI frameworks
Video players
Web frameworks
Web servers
Webmail
WordPress plugins
WordPress themes
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
- Sep 2026 claudebot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 95% desktop
- 5% phone
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.39 / 10 · ranked #1,021,441 of all domains
54 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Vietnamese
- CDN: Cloudflare
- Weight: 2.0 MB · 80 requests
- WordPress theme: divi · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (104.21.57.107, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 2,499,228, 20 hosts
- Verified with: Google, Meta Business, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| danang.codegym.vn | 37 |
| hanoi.codegym.vn | 34 |
| online.codegym.vn | 33 |
| saigon.codegym.vn | 33 |
| subscription.codegym.vn | 33 |
| daihoc.codegym.vn | 29 |
| pages.codegym.vn | 27 |
| codegym.vn | 24 |
| blog.codegym.vn | 21 |
| bob.codegym.vn | 18 |
| quiz.codegym.vn | 17 |
| hoclaptrinh.codegym.vn | 6 |
| andy.codegym.vn | 5 |
Full technology history →
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Recent changes
- dropped Clipboard.js Sep 2026
- dropped Prism Sep 2026
- detected Tailwind CSS Aug 2026
- detected Cloudflare Browser Insights May 2026
- detected HTTP/3 May 2026
- dropped LottieFiles Jan 2026
- detected Clipboard.js Nov 2025
- detected jQuery Mobile Nov 2025
- detected LottieFiles Nov 2025
- detected Prism Nov 2025