What powers knowful.jp?
Last seen Sep 2026 · 33 technologies across 18 categories
Advertising
Twitter Ads
since Aug 2022
Analytics
Google Analytics
since Aug 2022
Microsoft Clarity
since Sep 2026
CDN
cdnjs
since Aug 2022
Cloudflare
since Aug 2022
CMS
Databases
MySQL
since Aug 2022
Font scripts
Google Font API
since Sep 2023
Hosting
Xserver
since Aug 2022
JavaScript frameworks
JavaScript libraries
LazySizes unveilhooks plugin
since Aug 2022
Swiper
since Sep 2022
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Performance
Priority Hints
since Aug 2023
Programming languages
PHP
since Aug 2022
Security
Cloudflare Bot Management
since Sep 2024
reCAPTCHA
since Nov 2024
Tag managers
Google Tag Manager
since Aug 2022
Video players
YouTube
since Aug 2022
Web servers
Nginx
since Aug 2022
Widgets
Pocket
since Feb 2023
WordPress plugins
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.39 / 10 · ranked #2,703,288 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| CLS | 0.3 |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on Xserver (103.3.2.30)
- DNS: Xserver
- Email: knowful.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 37,610,197, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Cloudflare Bot Management Nov 2025