What powers 
jcmf.or.jp?
Last seen Sep 2026 · 18 technologies across 14 categories
Advertising
Twitter Ads
since Apr 2023
Analytics
Google Analytics
since May 2020
CDN
cdnjs
since Apr 2023
Cloudflare
since Apr 2023
CMS
Databases
MySQL
since Apr 2023
Font scripts
Google Font API
since May 2020
Twitter Emoji (Twemoji)
since Apr 2023
Hosting
Xserver
since Apr 2023
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Performance
LazySizes
since Apr 2023
Priority Hints
since May 2024
Programming languages
PHP
since May 2020
Web servers
Nginx
since Apr 2023
Widgets
Twitter
since Apr 2023
WordPress plugins
EWWW Image Optimizer
since Apr 2023
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 67% desktop
- 33% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.67 / 10 · ranked #780,082 of all domains
46 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| CLS | 0 |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 4.9 MB · 73 requests
- WordPress theme: jcmf-2023 · all themes
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Xserver (162.43.122.123)
- DNS: Xserver
- Email: jcmf.or.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 3,033,166, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.jcmf.or.jp | 17 |
| jcmf.or.jp | 16 |