What powers 
vjs.ac.vn?
Last seen Sep 2026 · 13 technologies across 10 categories
Analytics
CDN
DMS
JavaScript libraries
Miscellaneous
Operating systems
Programming languages
UI frameworks
Web servers
Webmail
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
- 84% desktop
- 16% phone
Vietnam
India
Indonesia
Philippines
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #352,687 of all domains
107 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 5.2 MB · 32 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Academia Journal of Biology
- Founded: 2018
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.21.34.12, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 600,841, 6 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| vjs.ac.vn | 10 |
| www.vjs.ac.vn | 7 |
Full technology history →
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Recent changes
- dropped Open Graph Jul 2026