What powers event21.co.jp?
Last seen Jun 2026 · 23 technologies across 14 categories
Advertising
Analytics
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Jul 2018
CDN
cdnjs
since Jan 2026
Cloudflare
since Mar 2025
Font scripts
JavaScript frameworks
Socket.io
since Jul 2018
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Programming languages
Node.js
since Jul 2018
Security
Cloudflare Bot Management
since Mar 2025
Tag managers
Google Tag Manager
since Jul 2018
Video players
YouTube
since Apr 2018
Web servers
Apache HTTP Server
since Apr 2018
Webmail
Google Workspace
since Aug 2022
Widgets
Audience
- 85% desktop
- 15% phone
Japan
Indonesia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.69 / 10 · ranked #365,284 of all domains
76 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 10.1 MB · 197 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| event21.co.jp | 22 |
| www.event21.co.jp | 11 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Bot Management May 2026
- dropped Treasure Data Feb 2026
- detected cdnjs Jan 2026
- detected Cloudflare Jan 2026
- detected Treasure Data Dec 2025
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- dropped Treasure Data Aug 2025