What powers vtdon.com?
Last seen Aug 2026 · 10 technologies across 8 categories
Mailgun
since Mar 2023
JavaScript frameworks
React
since Mar 2023
JavaScript libraries
Message boards
Mastodon
since Mar 2023
Miscellaneous
Programming languages
Ruby
since Mar 2023
Security
HSTS
since Mar 2023
Web frameworks
Ruby on Rails
since Mar 2023
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 2026.
Training crawlers
- GPTBot Blocked
The other 32 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
AI Crawlers
1 of 33 AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.90 / 10 · ranked #3,872,415 of all domains
32 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.6 MB · 18 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Aug 2026.