What powers 
otsucle.jp?
Last seen Aug 2026 · 13 technologies across 10 categories
Advertising
Twitter Ads
since Jun 2021
Analytics
Authentication
Facebook Login
since Jun 2021
CDN
Cloudflare
since Mar 2025
JavaScript graphics
Chart.js
since Jan 2019
JavaScript libraries
crypto-js
since Jun 2023
Miscellaneous
Open Graph
since Sep 2022
Security
Cloudflare Bot Management
since Mar 2025
Web servers
Nginx
since Jan 2019
Widgets
Twitter
since Jan 2019
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
- 64% desktop
- 36% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.55 / 10 · ranked #844,905 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 3.0 MB · 60 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on SINET-AS Research Organization of Information and Systems, National Institute of Informatics (150.59.5.159)
- DNS: Onamae.com
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: GlobalSign, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 7,770,483
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Swiper Apr 2026
- detected Chart.js Mar 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025