What powers jcm.go.jp?
Last seen Oct 2026 · 13 technologies across 10 categories
Analytics
CDN
Amazon CloudFront
since Apr 2026
Amazon S3
since Apr 2026
CMS
Databases
MySQL
since Apr 2026
Hosting
WordPress Multisite
since Apr 2026
JavaScript libraries
PaaS
Amazon Web Services
since Mar 2026
Programming languages
Security
HSTS
since Sep 2022
Web frameworks
Ruby on Rails
since Sep 2022
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
- 91% desktop
- 9% phone
Japan
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.52 / 10 · ranked #874,650 of all domains
28 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- CDN: Amazon CloudFront
- Weight: 0.7 MB · 24 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- DNS: Amazon Route 53
- Email: jcm.go.jp
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 586,314, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped RackCache May 2026
- detected Amazon CloudFront Apr 2026
- detected Amazon S3 Apr 2026
- detected MySQL Apr 2026
- detected PHP Apr 2026
- detected WordPress Apr 2026
- detected WordPress Multisite Apr 2026
- detected Amazon Web Services Mar 2026