What powers tas21.jp?
Last seen Jun 2026 · 5 technologies across 4 categories
JavaScript libraries
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Jan 2019
Web servers
Apache HTTP Server
since Jan 2019
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.64 / 10 · ranked #2,252,465 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 2.3 MB · 44 requests
- Structured data: Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.