What powers 
etudes.jp?
Last seen Sep 2026 · 30 technologies across 16 categories
Advertising
Analytics
Google Ads Conversion Tracking
since Aug 2022
Google Analytics
since Aug 2022
Microsoft Clarity
since Dec 2022
CDN
cdnjs
since Jun 2026
Cloudflare
since Jun 2026
Font scripts
Google Font API
since Jun 2026
JavaScript frameworks
JavaScript libraries
Marketing automation
Salesforce Marketing Cloud Account Engagement
since Dec 2022
Miscellaneous
Open Graph
since Dec 2022
Webpack
since Aug 2022
PaaS
Azure
since Aug 2022
Programming languages
Security
HSTS
since May 2023
Tag managers
Google Tag Manager
since Aug 2022
UI frameworks
Video players
YouTube
since Aug 2022
Web servers
Nginx
since Mar 2020
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 robots.txt appeared
- Oct 2026 * added to robots.txt
- Sep 2026 * removed from robots.txt
- Sep 2026 robots.txt removed
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
4.72 / 10 · ranked #300,395 of all domains
75 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 25 ms |
| CLS | 0.1 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 5.3 MB · 164 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (3.33.186.173)
- DNS: Azure DNS
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 6,725,207, 25 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| etudes.jp | 22 |
| bizpla.etudes.jp | 20 |
| kodoken.etudes.jp | 7 |
| smartkids.etudes.jp | 7 |
| 4nua.etudes.jp | 6 |
| ainj.etudes.jp | 6 |
| alue-elearning.etudes.jp | 6 |
| alue-lms.etudes.jp | 6 |
| aruhi.etudes.jp | 6 |
| carefit.etudes.jp | 6 |
| cersi.etudes.jp | 6 |
| codomode.etudes.jp | 6 |
| demo.etudes.jp | 6 |
| ehd.etudes.jp | 6 |
| elearning-fairpride.etudes.jp | 6 |
| elearning-jc.etudes.jp | 6 |
| fun-nihongo.etudes.jp | 6 |
| gigo.etudes.jp | 6 |
| gsx.etudes.jp | 6 |
| haruna.etudes.jp | 6 |
| hcm-net.etudes.jp | 6 |
| idigedu.etudes.jp | 6 |
| irric-lmstrial.etudes.jp | 6 |
| itskillupshizuoka.etudes.jp | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped jQuery Migrate May 2026
- dropped jQuery UI May 2026