What powers 
seikeikai.or.jp?
Last seen Sep 2026 · 11 technologies across 9 categories
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Programming languages
Tag managers
Web servers
WordPress plugins
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
- 82% phone
- 18% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.76 / 10 · ranked #735,654 of all domains
38 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 6.3 MB · 103 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Seikeikai Hospital
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Xserver (183.90.228.46)
- DNS: Xserver
- Email: Trend Micro Email Security
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 11,194,117, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped All in One SEO Jun 2026
- dropped Font Awesome Jun 2026
- dropped Google Analytics Jun 2026
- dropped Google Hosted Libraries Jun 2026
- dropped jQuery Migrate Jun 2026
- dropped MetaSlider Jun 2026
- dropped RSS Jun 2026