What powers 
osy.co.jp?
Last seen Aug 2026 · 27 technologies across 17 categories
Analytics
Caching
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Performance
Programming languages
Security
SEO
Tag managers
UI frameworks
Video players
Web servers
Widgets
WordPress plugins
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 Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 66% phone
- 34% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.24 / 10 · ranked #445,447 of all domains
63 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Fastly
- Weight: 2.4 MB · 65 requests
- WordPress theme: osy · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Oshima Shipbuilding co., Ltd. (Oshima Shipbuilding on Wikidata)
- Founded: 1973
- Sector: shipbuilding
- Country: Japan
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on ODN SoftBank Corp. (218.40.195.224)
- DNS: osy.co.jp
- Email: Barracuda
- Email security: SPF (soft fail), no DMARC record
- SSL: Certainly, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 1,209,767, 4 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| jp.osy.co.jp | 23 |
| en.osy.co.jp | 22 |
| www.osy.co.jp | 16 |
Full technology history →
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Recent changes
- dropped Facebook Login Dec 2025
- dropped Twitter Ads Dec 2025
- detected AddToAny Nov 2025
- detected AddToAny Share Buttons Nov 2025
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- detected Cloudflare Turnstile Nov 2025