What powers 21ah.jp?
Last seen Jun 2026 · 13 technologies across 9 categories
Analytics
Google Analytics
since Jun 2021
CDN
Font scripts
Google Font API
since Aug 2023
JavaScript frameworks
GSAP
since Aug 2023
JavaScript libraries
Maps
Google Maps
since Jun 2023
Miscellaneous
Open Graph
since Jun 2023
PWA
since Aug 2022
Programming languages
Web servers
Apache HTTP Server
since Jun 2021
Audience
- 88% phone
- 12% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.23 / 10 · ranked #3,032,117 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 4.2 MB · 112 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| otaka.21ah.jp | 13 |
| www.21ah.jp | 6 |