What powers kerislab.jp?
Last seen Oct 2026 · 9 technologies across 8 categories
Analytics
Google Analytics
since Sep 2020
Caching
Varnish
since Sep 2020
CDN
Fastly
since Sep 2020
Font scripts
Google Font API
since Sep 2020
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
PaaS
GitHub Pages
since Sep 2020
Static site generator
Tag managers
Google Tag Manager
since Feb 2022
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
2.00 / 10 · ranked #3,592,140 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Japanese
- CDN: Fastly
- Weight: 1.5 MB · 28 requests
- Structured data: Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: star-domain.jp
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 2,051,046, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted