What powers 
onto.jp?
Last seen Sep 2026 · 30 technologies across 12 categories
Analytics
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Miscellaneous
Performance
Programming languages
Web servers
WordPress plugins
WordPress themes
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 85% phone
- 15% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.51 / 10 · ranked #887,169 of all domains
36 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.4 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 24.7 MB · 184 requests
- WordPress theme: astra (child: astra_fantas) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 山口県 最古の温泉 長門湯本温泉 恩湯(おんとう)
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Xserver (183.90.238.47)
- DNS: Xserver
- Email: onto.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 9,014,705, 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 Open Graph Sep 2026
- detected RankMath SEO Sep 2026
- detected WP Rocket Sep 2026
- detected Twitter Emoji (Twemoji) Apr 2026