What powers seido.or.jp?
Last seen Oct 2026 · 6 technologies across 5 categories
Miscellaneous
SWFObject
since Jan 2019
Operating systems
CentOS
since Apr 2024
Programming languages
Adobe Flash
since Jul 2021
Web server extensions
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 70% phone
- 30% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #491,466 of all domains
69 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 250 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 0.7 MB · 71 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Yushima Seidō
- Founded: 1690
- Country: Japan
From Wikidata (CC0).
Infrastructure
- DNS: ys-net.ne.jp
- Email: seido.or.jp
- Email security: SPF (soft fail), DMARC monitor only
- Common Crawl link graph: rank 2,417,184, 2 hosts
DNS records as swept Nov 2026. How the web is hosted