What powers 
sapporosansin.jp?
Last seen Oct 2026 · 9 technologies across 7 categories
Analytics
Google Analytics
since Jan 2019
CDN
jsDelivr
since Jul 2020
Font scripts
Google Font API
since Jan 2019
Hosting
Xserver
since Apr 2023
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Web servers
Nginx
since May 2022
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
- 79% desktop
- 21% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.89 / 10 · ranked #258,229 of all domains
85 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Japanese
- Weight: 4.1 MB · 59 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Xserver (183.90.228.15)
- DNS: Xserver
- Email: sapporosansin.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 2,365,876, 3 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.sapporosansin.jp | 9 |
| seminar.sapporosansin.jp | 8 |