What powers 
seijinkai.or.jp?
Last seen Oct 2026 · 14 technologies across 12 categories
Analytics
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Maps
Miscellaneous
Programming languages
Security
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 Nov 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 90% phone
- 10% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.46 / 10 · ranked #939,013 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 15.7 MB · 162 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 特定医療法人誠仁会 大久保病院
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Xserver (85.131.197.24)
- DNS: Xserver
- Email: seijinkai.or.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 11,245,402
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted