What powers 
dosanko.co.jp?
Last seen Sep 2026 · 11 technologies across 9 categories
Advertising
Twitter Ads
since Jul 2024
Analytics
Google Analytics
since Jan 2019
Authentication
Facebook Login
since Jul 2024
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Operating systems
CentOS
since Jul 2024
Web servers
Apache HTTP Server
since Jan 2019
Webmail
Microsoft 365
since Aug 2022
Widgets
Twitter
since Jul 2024
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #343,547 of all domains
51 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.4 MB · 55 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Sapporo Eizo Production
- Founded: 1975
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only
- SSL: GlobalSign, RSA 2048, wildcard, expires Apr 2027
- Common Crawl link graph: rank 1,210,528, 10 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| kikonai.dosanko.co.jp | 10 |
| hid.dosanko.co.jp | 7 |
| www.dosanko.co.jp | 7 |