What powers tsr.ac.jp?
Last seen Aug 2026 · 24 technologies across 15 categories
Advertising
Twitter Ads
since Apr 2021
Yahoo Advertising
since Apr 2022
Analytics
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Jan 2019
Microsoft Clarity
since Jan 2022
TikTok Pixel
since Apr 2022
CMS
WordPress
since Apr 2022
Databases
MySQL
since Apr 2022
Ecommerce
Cart Functionality
since Mar 2023
Font scripts
JavaScript libraries
Slick
since Jan 2019
Miscellaneous
Open Graph
since Sep 2022
Operating systems
UNIX
since Jan 2019
PaaS
Amazon Web Services
since Jun 2025
Programming languages
SEO
Tag managers
Google Tag Manager
since Jan 2019
Web server extensions
Web servers
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
- 73% phone
- 27% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.19 / 10 · ranked #461,670 of all domains
70 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 100 ms |
| CLS | 0.05 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 35.6 MB · 237 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on OPTAGE OPTAGE Inc. (219.122.63.201)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: SECOM Trust Systems, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 1,262,070, 3 hosts
- Verified with: Adobe
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| 2021-www.tsr.ac.jp | 21 |
| www.tsr.ac.jp | 21 |
Full technology history →
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Recent changes
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025