What powers c2sea.go.jp?
Last seen Jun 2026 · 22 technologies across 13 categories
Advertising
Twitter Ads
since Apr 2024
Analytics
Google Analytics
since Apr 2024
Authentication
Facebook Login
since Apr 2024
CDN
Cloudflare
since Mar 2025
CMS
a-blog cms
since Apr 2024
Font scripts
Google Font API
since Apr 2024
JavaScript libraries
Miscellaneous
Open Graph
since Apr 2024
PWA
since Apr 2024
Programming languages
PHP
since Apr 2024
Security
Cloudflare Bot Management
since Mar 2025
HSTS
since Apr 2024
Tag managers
Google Tag Manager
since Apr 2024
Web servers
Apache HTTP Server
since Apr 2024
Widgets
Twitter
since Apr 2024
Audience
- 85% phone
- 15% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.97 / 10 · ranked #590,748 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 100 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.7 MB · 96 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025