What powers 
vbcsd.vn?
Last seen Jan 2026 · 13 technologies across 9 categories
Editors
DreamWeaver
since May 2019
JavaScript libraries
Miscellaneous
Open Graph
since Oct 2024
Operating systems
Windows Server
since May 2019
UI frameworks
Video players
YouTube
since Jun 2023
Web frameworks
Microsoft ASP.NET
since Dec 2019
Web servers
Webmail
Google Workspace
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 100% desktop
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.48 / 10 · ranked #911,407 of all domains
25 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on LVSOFT-AS-VN Long Van Soft Solution JSC (103.237.144.78)
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 3072, expires Nov 2026
- Common Crawl link graph: rank 249,943, 4 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| vcsf.vbcsd.vn | 10 |
| vbcsd.vn | 9 |
| www.vbcsd.vn | 9 |
Full technology history →
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Recent changes
- dropped Google Font API Dec 2025