What powers htk.or.jp?
Last seen Aug 2026 · 10 technologies across 8 categories
Analytics
Google Analytics
since Jan 2019
CMS
Databases
MySQL
since Jan 2019
JavaScript libraries
Miscellaneous
PWA
since Aug 2022
Programming languages
PHP
since Jan 2019
Security
HSTS
since Feb 2025
Web servers
Apache HTTP Server
since Jan 2019
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 not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 76% desktop
- 24% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.12 / 10 · ranked #494,459 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 2.7 MB · 48 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ARTERIA Networks (133.149.219.126)
- DNS: ktk-sol.co.jp
- Email: ktk-sol.co.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: JPRS, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 12,981,083, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted