What powers sundai-kyouken.jp?
Last seen Sep 2026 · 21 technologies across 12 categories
Analytics
Google Analytics
since Jan 2019
Microsoft Clarity
since Dec 2021
CDN
Editors
DreamWeaver
since Jul 2025
Font scripts
Google Font API
since Jul 2020
JavaScript libraries
Miscellaneous
PaaS
Amazon Web Services
since Aug 2022
Programming languages
Tag managers
Google Tag Manager
since Dec 2021
UI frameworks
Bootstrap
since Jan 2019
Web server extensions
Web servers
Apache HTTP Server
since Jan 2019
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 62% desktop
- 38% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.10 / 10 · ranked #1,423,284 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 1.6 MB · 38 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on NIFCLOUD-NET FUJITSU LIMITED (116.118.236.204)
- DNS: Amazon Route 53
- Email: securemx.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: GlobalSign, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 1,250,391, 3 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sundai-kyouken.jp | 17 |
| www.sundai-kyouken.jp | 10 |