What powers 
stk.co.jp?
Last seen Sep 2026 · 23 technologies across 15 categories
Analytics
CDN
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Performance
Programming languages
Tag managers
UI frameworks
Video players
Web servers
Webmail
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 68% desktop
- 32% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.67 / 10 · ranked #778,146 of all domains
25 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 11.7 MB · 163 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- 四国通建株式会社
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Xserver (162.43.122.134)
- DNS: Onamae.com
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: CloudSecure Corporation, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 2,367,625, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.stk.co.jp | 23 |
| recruit.stk.co.jp | 20 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Apache HTTP Server May 2026
- dropped Google Hosted Libraries May 2026
- detected jsDelivr Apr 2026
- detected scrollreveal Apr 2026
- detected Swiper Apr 2026
- detected Twitter Emoji (Twemoji) Dec 2025