What powers vaccicheck.jp?
Last seen Oct 2026 · 11 technologies across 9 categories
Analytics
Google Analytics
since Apr 2023
CMS
Databases
MySQL
since Jul 2019
Hosting panels
Plesk
since Jul 2019
JavaScript libraries
Programming languages
Video players
YouTube
since Jul 2022
Web servers
Nginx
since Jul 2019
WordPress themes
Kaira Vogue
since Feb 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.77 / 10 · ranked #2,047,031 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.3 MB · 36 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on IDCF IDC Frontier Inc. (210.152.150.235)
- DNS: vaccicheck.jp
- Email: vaccicheck.jp
- Email security: SPF (hard fail), no DMARC record
- SSL: GlobalSign, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 11,970,954, 2 hosts
- Verified with: GlobalSign
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted