What powers tdg.ac.jp?
Last seen Sep 2026 · 24 technologies across 9 categories
Advertising
Analytics
CDN
JavaScript libraries
Miscellaneous
PaaS
Performance
Security
Tag managers
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
AI Crawlers
No AI crawlers blocked
Audience
- 60% phone
- 40% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.60 / 10 · ranked #387,324 of all domains
78 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 150 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 7.6 MB · 208 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 専門学校 東京デザイナー・アカデミー (Tokyo Designer Gakuin College on Wikidata)
- Founded: 1963
- Country: Japan
- Profiles: X, Instagram, TikTok, YouTube
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Xserver (183.90.235.2)
- DNS: namedserver.net
- Email: tdg.ac.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Apr 2027
- Common Crawl link graph: rank 526,927, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
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Recent changes
- detected TikTok Pixel Aug 2026
- detected Pinterest Conversion Tag Jun 2026
- detected Cloudflare Bot Management May 2026
- detected cdnjs Jan 2026
- detected Cloudflare Jan 2026
- detected Priority Hints Jan 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025