What powers vlsi.jp?
Last seen Oct 2026 · 6 technologies across 6 categories
Analytics
Google Analytics
since Jan 2023
Caching
Varnish
since Jan 2023
CDN
Fastly
since Jan 2023
Miscellaneous
Open Graph
since Jan 2023
PaaS
GitHub Pages
since Jan 2023
Security
HSTS
since Jan 2023
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.91 / 10 · ranked #3,837,458 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| CLS | 0.45 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Japanese
- CDN: Fastly
- Weight: 0.2 MB · 8 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Onamae.com
- Email: zoho.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 7,693,503
- Verified with: Google, Zoho
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted