What powers 21ccc.jp?
Last seen Jun 2026 · 14 technologies across 11 categories
CDN
Google Hosted Libraries
since Aug 2022
CMS
Databases
MySQL
since Jul 2019
Font scripts
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Programming languages
PHP
since Jul 2019
SEO
Web servers
Nginx
since Jul 2019
Webmail
Google Workspace
since Aug 2022
WordPress plugins
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.77 / 10 · ranked #4,547,200 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 16.0 MB · 38 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.