What powers 21kotsu.co.jp?
Last seen Jun 2026 · 25 technologies across 14 categories
CDN
Google Hosted Libraries
since Aug 2022
CMS
WordPress
since Aug 2022
Databases
MySQL
since Aug 2022
Font scripts
Google Font API
since Aug 2022
Twitter Emoji (Twemoji)
since Aug 2022
Hosting
Xserver
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Feb 2023
RSS
since Feb 2023
Mobile frameworks
Performance
Priority Hints
since Dec 2025
Programming languages
PHP
since Aug 2022
Security
reCAPTCHA
since Feb 2023
Web servers
Nginx
since Aug 2022
Widgets
FlexSlider
since Aug 2022
WordPress plugins
Contact Form 7
since Aug 2022
MetaSlider
since Aug 2022
Photo Gallery
since Aug 2022
SiteOrigin Page Builder
since Aug 2022
SiteOrigin Widgets Bundle
since Aug 2022
Smart Slider 3
since Aug 2022
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.47 / 10 · ranked #6,792,499 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.7 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 3300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 10.8 MB · 76 requests
- WordPress theme: luxeritas (child: luxech) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| 21kotsu.co.jp | 23 |
| www.21kotsu.co.jp | 20 |
Full technology history →
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Recent changes
- detected Priority Hints Dec 2025