What powers jcha.jp?
Last seen Oct 2026 · 7 technologies across 7 categories
Analytics
Google Analytics
since Apr 2019
Authentication
Facebook Login
since Dec 2022
Hosting
Xserver
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Tag managers
Google Tag Manager
since Apr 2019
Web servers
Nginx
since Jun 2021
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 78% phone
- 22% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.42 / 10 · ranked #985,037 of all domains
25 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 9.4 MB · 111 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Xserver (183.181.97.83)
- DNS: Xserver
- Email: jcha.jp
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 236,075, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| jcha.jp | 7 |
| www.jcha.jp | 2 |