What powers ota.ac.jp?
Last seen Aug 2026 · 2 technologies across 2 categories
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 71% phone
- 29% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.51 / 10 · ranked #885,432 of all domains
28 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 0.1 MB · 7 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ATWORKS A.T.WORKS, Inc. (182.16.229.155)
- Email: ota.ac.jp
- Email security: no SPF record, no DMARC record
- SSL: JPRS, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 11,051,071, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted