What powers seibundoh.co.jp?
Last seen Sep 2026 · 19 technologies across 12 categories
Advertising
Twitter Ads
since Sep 2024
Analytics
Google Analytics
since May 2025
CDN
Cloudflare
since Mar 2025
Ecommerce
Cart Functionality
since Sep 2024
Font scripts
Font Awesome
since Sep 2024
JavaScript libraries
Highlight.js
since Sep 2024
Isotope
since Sep 2024
Maps
Google Maps
since Sep 2024
Programming languages
PHP
since Sep 2024
Security
Cloudflare Bot Management
since Mar 2025
HSTS
since Sep 2024
UI frameworks
Web servers
Apache HTTP Server
since Jan 2016
Widgets
Twitter
since Sep 2024
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 58% desktop
- 42% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #366,467 of all domains
80 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 36.5 MB · 75 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Seibundoh Publishing
- Founded: 1960
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on CPI-NET KDDI Web Communications Inc. (194.91.9.246)
- DNS: cpi.ad.jp
- Email: secure.ne.jp
- Email security: SPF (hard fail), DMARC monitor only
- SSL: JPRS, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,358,412, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| seibundoh.co.jp | 19 |
| www.seibundoh.co.jp | 19 |
Full technology history →
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Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025