What powers 4154.jp?
Last seen Jun 2026 · 8 technologies across 8 categories
CDN
jQuery CDN
since Feb 2022
Font scripts
Google Font API
since Nov 2021
JavaScript libraries
Operating systems
CentOS
since Nov 2021
Programming languages
UI frameworks
Bootstrap
since Nov 2021
Web server extensions
Web servers
Audience
- 65% phone
- 35% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.74 / 10 · ranked #18,010,973 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 0.3 MB · 11 requests
Homepage as crawled by the HTTP Archive, Jul 2026.