What powers 
rikagaku.co.jp?
Last seen Oct 2026 · 19 technologies across 11 categories
Analytics
CDN
Ecommerce
Hosting
JavaScript frameworks
JavaScript libraries
Miscellaneous
Payment processors
Performance
Security
Web servers
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 found
- llms-full.txt found
- ai.txt not found
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Standards: llms.txt, llms-full.txt
Audience
- 61% phone
- 39% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.18 / 10 · ranked #231,243 of all domains
119 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Cloudflare
- Weight: 2.0 MB · 248 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 日本理化学工業株式会社 (Nihon Rikagaku Industry Co., Ltd. on Wikidata)
- Founded: 1937
- Country: Japan
- Profiles: X, Facebook, Instagram, YouTube
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (23.227.38.68)
- DNS: Onamae.com
- Email: Xserver
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 677,935, 2 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| rikagaku.co.jp | 15 |
| www.rikagaku.co.jp | 4 |
Full technology history →
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