What powers sight-k.co.jp?
Last seen Aug 2026 · 9 technologies across 7 categories
Analytics
Google Analytics
since Jan 2023
CDN
cdnjs
since Jan 2023
Cloudflare
since Jan 2023
Font scripts
JavaScript libraries
Maps
Google Maps
since Jan 2023
Miscellaneous
Open Graph
since Jan 2023
Web servers
Apache HTTP Server
since Jan 2023
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 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
1.76 / 10 · ranked #4,607,912 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| CLS | 0.05 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 4.5 MB · 65 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on OCN NTT Communications Corporation (61.126.52.221)
- DNS: customer.ne.jp
- Email: ocn.ad.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: JPRS, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 19,017,869
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Plesk Oct 2025