What powers seiseikai.or.jp?
Last seen Sep 2026 · 5 technologies across 5 categories
Analytics
Google Analytics
since May 2023
JavaScript libraries
Miscellaneous
SWFObject
since May 2023
Programming languages
Adobe Flash
since May 2023
Web servers
Apache HTTP Server
since May 2023
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.21 / 10 · ranked #9,802,682 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 0.3 MB · 60 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on GMO Internet (157.7.44.237)
- DNS: Muumuu Domain
- Email: hetemail.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 18,471,083, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted