What powers 4kou.jp?
Last seen May 2026 · 11 technologies across 9 categories
CDN
Google Hosted Libraries
since Nov 2022
CMS
WordPress
since Nov 2022
Databases
MySQL
since Nov 2022
Hosting
Sakura Internet
since Nov 2022
JavaScript libraries
Programming languages
PHP
since Nov 2022
Security
reCAPTCHA
since Nov 2022
Web servers
Nginx
since Nov 2022
WordPress plugins
Autoptimize
since Aug 2024
Audience
- 100% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.42 / 10 · ranked #7,308,677 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 8.6 MB · 31 requests
Homepage as crawled by the HTTP Archive, Jul 2026.