What powers koyukai.com?
Last seen Oct 2026 · 5 technologies across 4 categories
CDN
Amazon CloudFront
since Nov 2022
Amazon S3
since Nov 2022
CMS
microCMS
since Sep 2025
Miscellaneous
HTTP/3
since Oct 2023
PaaS
Amazon Web Services
since Nov 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
0.73 / 10 · ranked #18,342,386 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 0.5 MB · 5 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Amazon Web Services (13.113.113.194)
- DNS: Amazon Route 53
- Email: koyukai.com
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 12,329,204, 4 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| hcd.koyukai.com | 4 |
| www.koyukai.com | 4 |