What powers ohvn.vn?
Last seen Sep 2026 · 38 technologies across 22 categories
Analytics
Authentication
CDN
CMS
Databases
Development
Font scripts
Hosting
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Maps
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Tag managers
UI frameworks
Web servers
Webmail
WordPress plugins
AI Crawlers
Blocks 12 of 33 AI crawlers we track by name in its robots.txt, restricts 1 more. Checked Oct 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- Google-CloudVertexBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- PetalBot Blocked
- Amazonbot Restricted
The other 20 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
- Oct 2026 claude-web added to robots.txt
- Oct 2026 cohere-ai added to robots.txt
- Oct 2026 petalbot added to robots.txt
- Oct 2026 google-cloudvertexbot added to robots.txt
- Oct 2026 anthropic-ai added to robots.txt
- Oct 2026 googleother added to robots.txt
AI Crawlers
12 of 33 AI crawlers blocked
Standards: Content Signals
Audience
- 61% phone
- 39% desktop
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.90 / 10 · ranked #3,857,863 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| CLS | 0.65 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 15.3 MB · 84 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Industry: Healthcare (declares
MedicalBusiness)
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (104.21.51.107, IPv6)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 19,017,769, 2 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.ohvn.vn | 23 |
| ohvn.vn | 19 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft Clarity Jul 2026